2.5. Pedagogical experiment
2.5.1. Purpose, subjects, and time of experiment
Regarding the purpose , to verify the practical feasibility of using the flipped classroom model in DHLS in high schools to improve teaching and learning effectiveness, specifically to enhance students' interest in learning, train students in basic skills such as self-study, use of IT and cooperation, etc., we have conducted a pedagogical experiment. Through the practical pedagogical experiment, we will come to a conclusion about the role, significance and effectiveness of using the flipped classroom model in DHLS in high schools.
The subjects are students of 2 groups of grade 10 classes at Luong Tai High School.
- Bac Ninh.
Experimental time : according to the program distribution and schedule of 4 classes 10A1, 10A2, 10D6 and 10D8 of Luong Tai High School - Bac Ninh in semester II, school year 2018 - 2019.
2.5.2. Experimental content and methods
Experimental content : we teach the content " Lesson 30. War of Independence of British colonies in North America" - History grade 10 high school (standard program).
Experimental method : To conduct the experiment, we conducted - Prepared 2 lesson plans: one with the experimental class using the flipped classroom model based on the online learning website Padlet (see more in Experimental Class Lesson Plan, Appendix) and one with the control class conducted according to the regular classroom model but applying some new teaching methods (see more in Control Class Lesson Plan, Appendix).
- Select two groups of classes with similar number of students and cognitive level: control class (10A2 and 10D6) and experimental class (10A1 and 10D8).
- Application: For the two experimental classes, we conducted teaching according to the flipped classroom model. For the two control classes, we conducted teaching according to the regular classroom model.
- After class, we evaluate the experimental results through surveys and comments for the teachers who observed the class. For students, it is through receiving feedback after class (after class, we ask each student or group of students to write down their feedback about the class. Specifically:
+ For experimental classes: level of interest in the lesson, do you want to continue studying according to this model, what difficulties do you encounter when studying according to this model and what do you expect from the teacher?
+ For the control class: level of interest in the lesson and expectations for the teacher?
And a 15-minute test (see more in Tests 1, 2, 3, 4, Appendix).
2.5.3. Experimental results
After teaching in two control classes (10A2 and 10D6) and two experimental classes (10A1 and 10D8), we conducted a survey of teachers and students' opinions after the lesson. At the same time, we conducted a short 15-minute test and obtained the following results:
2.5.3.1. Results obtained from opinion survey
- For teachers, our experimental lesson had the participation of two teachers who are History teachers in the classes we chose.
Through the process of monitoring and observing the lessons, teachers highly appreciate the use of the flipped classroom model in DHLS at high schools. With this model, students are more excited about class time and actively participate in discussing issues. The basic knowledge of the lesson has been included in the Web lecture for students to complete in their notebooks at home. From there, in class, students do not need to take notes, and have more time for more engaging activities to learn more about the lesson. Using online teaching will help students on the one hand.
develop the ability to use IT, on the other hand, create attraction and novelty in teaching and learning, and at the same time initially familiarize students with sources of materials outside of textbooks, access to many different opinions to evaluate events and characters more accurately and objectively. Moreover, with the problems and tasks that require students to complete in class, it helps students reveal their talents, express themselves (drawing, writing poetry, presenting, acting, ...), approach from new perspectives, ...
However, teachers also pointed out some limitations that need to be overcome for the lecture. First is about time. The time for each lesson is only 45 minutes, both discussion and presentation will sometimes not be enough time if the groups are not effective or the problem is too difficult, too long (we have to ask for an extra 10 minutes of recess). Next is the students' self-awareness. Some students will learn the lesson in advance, will do as required, but others will be dependent, not proactive, actively follow the previous lesson on the Web. This requires teachers to regularly monitor, more closely follow the students' self-study process on the Web at home.
- For students , we observed during the experiment, and after the experiment, we asked each student or group of students to write down their feedback on the lesson to collect students' opinions.
During the experiment, we closely observed the students' learning spirit and found that:
In the two experimental classes, all students were enthusiastic, enthusiastic, actively participating in the discussion issues, even competing to present their products first, competing to represent their groups to present. The products of the groups, although still sketchy, were very impressive and demonstrated the true spirit of creativity. The students representing the groups presented very confidently, mastering the situations well. As for the two control classes, we also noticed the spirit of enthusiasm, excitement, and active participation in the lesson. However, there were still some students who did not pay attention. And especially when taking notes, they were very lethargic, often losing focus. When assigning homework,
Very few students pay attention and want to refuse because there are many exercises from other subjects.
When surveyed about the lesson, more than 80% of the experimental class students wanted to learn in the flipped classroom model again. The remaining 20% also liked this model but did not want it to be applied regularly because they still had to do homework for many other subjects at home.
As for the control class, all students wanted to learn with many new teaching methods, forms, and models. They did not like doing homework, did not like reading and copying basic knowledge.
2.5.3.2. Results obtained from the 15-minute test
After the experimental teaching, we conducted a survey on the initial results through a 15-minute test with four sets of questions. In which, four multiple-choice and quick-answer questions were the same and one essay question was different.
Table 2.1. Statistical table of test results of classes (members)
Class
Number of students | Check Point | |||||||
>5 | 5 | 6 | 7 | 8 | 9 | 10 | ||
Control (10A2, 10D6) | 85 | 0 | 0 | 7 | 29 | 34 | 12 | 3 |
Experimental (10A1, 10D8) | 84 | 0 | 0 | 0 | 17 | 36 | 23 | 8 |
Maybe you are interested!
-
Statistical Table of Test Results of Classes 10A1 and 10A6 -
Mobile Phone Usage in Hanoi Inner City Area
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- Test the relationship between demographic variables and consumer behavior for Mobile Marketing activities
The analysis method used is the Chi-square test (χ2), with statistical hypotheses H0 and H1 and significance level α = 0.05. In case the P index (p-value) or Sig. index in SPSS has a value less than or equal to the significance level α, the hypothesis H0 is rejected and vice versa. With this testing procedure, the study can evaluate the difference in behavioral trends between demographic groups.
CHAPTER 4
RESEARCH RESULTS
During two months, 1,100 survey questionnaires were distributed to mobile phone users in the inner city of Hanoi using various methods such as direct interviews, sending via email or using questionnaires designed on the Internet. At the end of the survey, after checking and eliminating erroneous questionnaires, the study collected 858 complete questionnaires, equivalent to a rate of about 78%. In addition, the research subjects of the thesis are only people who are using mobile phones, so people who do not use mobile phones are not within the scope of the thesis, therefore, the questionnaires with the option of not using mobile phones were excluded from the scope of analysis. The number of suitable survey questionnaires included in the statistical analysis was 835.
4.1 Demographic characteristics of the sample
The structure of the survey sample is divided and statistically analyzed according to criteria such as gender, age, occupation, education level and personal income. (Detailed statistical table in Appendix 6)
- Gender structure: Of the 835 completed questionnaires, 49.8% of respondents were male, equivalent to 416 people, and 50.2% were female, equivalent to 419 people. The survey results of the study are completely consistent with the gender ratio in the population structure of Vietnam in general and Hanoi in particular (Male/Female: 49/51).
- Age structure: 36.6% of respondents are <23 years old, equivalent to 306 people. People from 23-34 years old
accounting for the highest proportion: 44.8% equivalent to 374 people, people aged 35-45 and >45 are 70 and 85 people equivalent to 8.4% and 10.2% respectively. Looking at the results of this survey, we can see that the young people - youth account for a large proportion of the total number of people participating in the survey. Meanwhile, the middle-aged people including two age groups of 35 - 45 and >45 have a low rate of participation in the survey. This is completely consistent with the reality when Mobile Marketing is identified as a Marketing service aimed at young people (people under 35 years old).
- Structure by educational level: among 835 valid responses, 541 respondents had university degrees, accounting for the highest proportion of ~ 75%, 102 had secondary school degrees, ~ 13.1%, and 93 had post-graduate degrees, ~ 11.9%.
- Occupational structure: office workers and civil servants are the group with the highest rate of participation with 39.4%, followed by students with 36.6%. Self-employed people account for 12%, retired housewives are 7.8% and other occupational groups account for 4.2%. The survey results show that the student group has the same rate as the group aged <23 at 36.6%. This shows the accuracy of the survey data. In addition, the survey results distributed by occupational criteria have a rate almost similar to the sample division rate in chapter 3. Therefore, it can be concluded that the survey data is suitable for use in analysis activities.
- Income structure: the group with income from 3 to 5 million has the highest rate with 39% of the total number of respondents. This is consistent with the income structure of Hanoi people and corresponds to the average income of the group of civil servants and office workers. Those
People with no income account for 23%, income under 3 million VND accounts for 13% and income over 5 million VND accounts for 25%.
4.2 Mobile phone usage in Hanoi inner city area
According to the survey results, most respondents said they had used the phone for more than 1 year, specifically: 68.4% used mobile phones from 4 to 10 years, 23.2% used from 1 to 3 years, 7.8% used for more than 10 years. Those who used mobile phones for less than 1 year accounted for only a very small proportion of ~ 0.6%. (Table 4.1)
Table 4.1: Time spent using mobile phones
Frequency
Ratio (%)
Valid Percentage
Cumulative Percentage
Alid
<1 year
5
.6
.6
.6
1-3 years
194
23.2
23.2
23.8
4-10 years
571
68.4
68.4
92.2
>10 years
65
7.8
7.8
100.0
Total
835
100.0
100.0
The survey indexes on the time of using mobile phones of consumers in the inner city of Hanoi are very impressive for a developing country like Vietnam and also prove that Vietnamese consumers have a lot of experience using this high-tech device. Moreover, with the majority of consumers surveyed having a relatively long time of use (4-10 years), it partly proves that mobile phones have become an important and essential item in people's daily lives.
When asked about the mobile phone network they are using, 31% of respondents said they are using the network of Vietel company, 29% use the network of
of Mobifone company, 27% use Vinaphone company's network and 13% use networks of other providers such as E-VN telecom, S-fone, Beeline, Vietnammobile. (Figure 4.1).
Figure 4.1: Mobile phone network in use
Compared with the announced market share of mobile telecommunications service providers in Vietnam (Vietel: 36%, Mobifone: 29%, Vinaphone: 28%, the remaining networks: 7%), we see that the survey results do not have many differences. However, the statistics show that there is a difference in the market share of other networks because the Hanoi market is one of the two main markets of small networks, so their market share in this area will certainly be higher than that of the whole country.
According to a report by NielsenMobile (2009) [8], the number of prepaid mobile phone subscribers in Hanoi accounts for 95% of the total number of subscribers, however, the results of this survey show that the percentage of prepaid subscribers has decreased by more than 20%, only at 70.8%. On the contrary, the number of postpaid subscribers tends to increase from 5% in 2009 to 19.2%. Those who are simultaneously using both types of subscriptions account for 10%. (Table 4.2).
Table 4.2: Types of mobile phone subscribers
Frequency
Ratio (%)
Valid Percentage
Cumulative Percentage
Valid
Prepay
591
70.8
70.8
70.8
Pay later
160
19.2
19.2
89.9
Both of the above
84
10.1
10.1
100.0
Total
835
100.0
100.0
The above figures show the change in the psychology and consumption habits of Vietnamese consumers towards mobile telecommunications services, when the use of prepaid subscriptions and junk SIMs is replaced by the use of two types of subscriptions for different purposes and needs or switching to postpaid subscriptions to enjoy better customer care services.
In addition, the majority of respondents have an average spending level for mobile phone services from 100 to 300 thousand VND (406 ~ 48.6% of total respondents). The high spending level (> 500 thousand VND) is the spending level with the lowest number of people with only 8.4%, on the contrary, the low spending level (under 100 thousand VND) accounts for the second highest proportion among the groups of respondents with 25.4%. People with low spending levels mainly fall into the group of students and retirees/housewives - those who have little need to use or mainly use promotional SIM cards. (Table 4.3).
Table 4.3: Spending on mobile phone charges
Frequency
Ratio (%)
Valid Percentage
Cumulative Percentage
Valid
<100,000
212
25.4
25.4
25.4
100-300,000
406
48.6
48.6
74.0
300,000-500,000
147
17.6
17.6
91.6
>500,000
70
8.4
8.4
100.0
Total
835
100.0
100.0
The statistics in Table 4.3 are similar to the percentages in the NielsenMobile survey results (2009) with 73% of mobile phone users having medium spending levels and only 13% having high spending levels.
The survey results also showed that up to 31% ~ nearly one-third of respondents said they sent more than 10 SMS messages/day, meaning that on average they sent 1 SMS message for every working hour. Those with an average SMS message volume (from 3 to 10 messages/day) accounted for 51.1% and those with a low SMS message volume (less than 3 messages/day) accounted for 17%. (Table 4.4)
Table 4.4: Number of SMS messages sent per day
Frequency
Ratio (%)
Valid Percentage
Cumulative Percentage
Valid
<3 news
142
17.0
17.0
17.0
3-10 news
427
51.1
51.1
68.1
>10 news
266
31.9
31.9
100.0
Total
835
100.0
100.0
Similar to sending messages, those with an average message receiving rate (from 3-10 messages/day) accounted for the highest percentage of ~ 55%, followed by those with a high number of messages (over 10 messages/day) ~ 24% and those with a low number of messages received daily (under 3 messages/day) remained at the bottom with 21%. (Table 4.5)
Table 4.5: Number of SMS messages received per day
Frequency
Ratio (%)
Valid Percentage
Cumulative Percentage
Valid
<3 news
175
21.0
21.0
21.0
3-10 news
436
55.0
55.0
76.0
>10 news
197
24.0
24.0
100.0
Total
835
100.0
100.0
When comparing the data of the two result tables 4.4 and 4.5, we can see the reasonableness between the ratio of the number of messages sent and the number of messages received daily by the interview participants.
4.3 Current status of SMS advertising and Mobile Marketing
According to the interview results, in the 3 months from the time of the survey and before, 94% of respondents, equivalent to 785 people, said they received advertising messages, while only a very small percentage of 6% (only 50 people) did not receive advertising messages (Table 4.6).
Table 4.6: Percentage of people receiving advertising messages in the last 3 months
Frequency
Ratio (%)
Valid Percentage
Cumulative Percentage
Valid
Have
785
94.0
94.0
94.0
Are not
50
6.0
6.0
100.0
Total
835
100.0
100.0
The results of Table 4.6 show that consumers in the inner city of Hanoi are very familiar with advertising messages. This result is also the basis for assessing the knowledge, experience and understanding of the respondents in the interview. This is also one of the important factors determining the accuracy of the survey results.
In addition, most respondents said they had received promotional messages, but only 24% of them had ever taken the action of registering to receive promotional messages, while 76% of the remaining respondents did not register to receive promotional messages but still received promotional messages every day. This is the first sign indicating the weaknesses and shortcomings of lax management of this activity in Vietnam. (Table 4.7)
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Field Test Results Table of Internal Course Test -
Business Performance of the Company in the Period 2009–2011 Table 2.1. Business Results of Viet Holiday Travel Company -
Management Status of Tcm Results Evaluation Through NCBH Form Table 2.9: Current Status of Evaluation of Professional Team Performance Results Through Form

Table 2.2. Statistical table of test results of classes by score group (%)
Group of points
Control class (10A2, 10D6) (85 students) | Experimental class (10A1, 10D8) (84 students) | |||
Number of students | Ratio (%) | Number of students | Ratio (%) | |
Good (9 – 10) | 15 | 17.7 | 31 | 36.9 |
Fair (7 – 8) | 63 | 74.1 | 53 | 63.1 |
Average (5 – 6) | 7 | 8.2 | 0 | 0 |
Chart 2.1. Comparison of test results of 2 groups of classes (%)
80
70
60
50
40
Experimental class (10A1, 10D8)
Control class (10A2, 10D6)
30
20
10
0
Good
Rather
Medium
Through the statistical tables (Table 2.1 and Table 2.2) and Chart 2.1, we can clearly see the difference in results between the control class and the experimental class.
- Regarding the percentage of students achieving excellent scores, the experimental class was significantly superior (36.9%) compared to the control class (17.7%).
- The percentage of students achieving good scores in both groups of classes is very high, the control class is 74.1% and the experimental class is 63.1%.
- Regarding the percentage of students achieving average scores, both groups of classes have very low rates. In which, the control class has 8.2%, while the experimental class has no students achieving average scores (0%).
Thus, through the initial results, we can see the positive level of the model when applied to DHLS in high schools. Basically, the model helps students remember knowledge better and more deeply. At the same time, it provides more new knowledge about the lesson for students, contributing to training students with necessary skills and abilities. However, there are also some limitations. Firstly, the time of each lesson taking place within 45 minutes is not enough for students to discuss, complete, present products and teachers to comment, evaluate, and conclude knowledge. Secondly, currently, the initiative and positivity in self-studying lessons of students is still very limited. This requires close supervision from teachers and coordination from families as well as self-awareness of students.
Chapter 2 Summary
Based on the theory and practice of the topic, we delve deeper into the structure and content of the Modern World History program for grade 10 (standard program). Through that, we realize that this is a content that can be divided into many important and attractive topics, providing students with the most basic knowledge about World History during this period. Through that, we cultivate students with the necessary skills and attitudes.
Second, we analyze the basic requirements and conditions needed when applying the flipped classroom model to teaching History in high schools.
Third, based on the need to use IT when applying the flipped classroom model, we introduce some software, tools and how to use them so that teachers and students can serve the teaching and learning of History.
Fourth, with the characteristics of the flipped classroom model, we have proposed some proposals and measures to apply the model to develop learning skills, IT skills and learning skills for high school students.
Finally, to test the feasibility of using this model, we conducted an experiment in high school. And although there are still some limitations, the initial results achieved are positive.
Thus, the flipped classroom model is a good, new and necessary model to be applied to the DHLS work in high schools to promote positivity and develop necessary capacities and skills for students.
CONCLUDE
Through the research process from theoretical to practical issues and then conducting pedagogical experiments, we come to the following conclusions:
Firstly, in the current era of rapid development of science and technology, innovation in teaching content, methods and forms is an inevitable trend. Teaching in the flipped classroom model is one of the active teaching methods and forms, promoting students' initiative and creativity, guiding students to self-study and self-practice skills to be able to "learn for life".
Second , based on the current ineffective teaching and learning of History, we study the possibility of using the flipped classroom model in the DHLS of the Modern World History section of grade 10 (standard program). Based on the content and objectives of the subject, specifically the objectives and contents of the Modern World History section of grade 10 (standard program), it can be affirmed that: Using the flipped classroom model in DHLS in general and teaching the Modern World History section of grade 10 (standard program) in particular is completely feasible.
Finally, to concretize the idea of using the flipped classroom model in DHLS in high schools, we designed an experimental lesson for the Modern World History section of grade 10 (standard program) in two groups of experimental and control classes at Luong Tai High School.
– Bac Ninh and although there are still certain limitations, has achieved initial positive signs.


![Mobile Phone Usage in Hanoi Inner City Area
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- Test the relationship between demographic variables and consumer behavior for Mobile Marketing activities
The analysis method used is the Chi-square test (χ2), with statistical hypotheses H0 and H1 and significance level α = 0.05. In case the P index (p-value) or Sig. index in SPSS has a value less than or equal to the significance level α, the hypothesis H0 is rejected and vice versa. With this testing procedure, the study can evaluate the difference in behavioral trends between demographic groups.
CHAPTER 4
RESEARCH RESULTS
During two months, 1,100 survey questionnaires were distributed to mobile phone users in the inner city of Hanoi using various methods such as direct interviews, sending via email or using questionnaires designed on the Internet. At the end of the survey, after checking and eliminating erroneous questionnaires, the study collected 858 complete questionnaires, equivalent to a rate of about 78%. In addition, the research subjects of the thesis are only people who are using mobile phones, so people who do not use mobile phones are not within the scope of the thesis, therefore, the questionnaires with the option of not using mobile phones were excluded from the scope of analysis. The number of suitable survey questionnaires included in the statistical analysis was 835.
4.1 Demographic characteristics of the sample
The structure of the survey sample is divided and statistically analyzed according to criteria such as gender, age, occupation, education level and personal income. (Detailed statistical table in Appendix 6)
- Gender structure: Of the 835 completed questionnaires, 49.8% of respondents were male, equivalent to 416 people, and 50.2% were female, equivalent to 419 people. The survey results of the study are completely consistent with the gender ratio in the population structure of Vietnam in general and Hanoi in particular (Male/Female: 49/51).
- Age structure: 36.6% of respondents are <23 years old, equivalent to 306 people. People from 23-34 years old
accounting for the highest proportion: 44.8% equivalent to 374 people, people aged 35-45 and >45 are 70 and 85 people equivalent to 8.4% and 10.2% respectively. Looking at the results of this survey, we can see that the young people - youth account for a large proportion of the total number of people participating in the survey. Meanwhile, the middle-aged people including two age groups of 35 - 45 and >45 have a low rate of participation in the survey. This is completely consistent with the reality when Mobile Marketing is identified as a Marketing service aimed at young people (people under 35 years old).
- Structure by educational level: among 835 valid responses, 541 respondents had university degrees, accounting for the highest proportion of ~ 75%, 102 had secondary school degrees, ~ 13.1%, and 93 had post-graduate degrees, ~ 11.9%.
- Occupational structure: office workers and civil servants are the group with the highest rate of participation with 39.4%, followed by students with 36.6%. Self-employed people account for 12%, retired housewives are 7.8% and other occupational groups account for 4.2%. The survey results show that the student group has the same rate as the group aged <23 at 36.6%. This shows the accuracy of the survey data. In addition, the survey results distributed by occupational criteria have a rate almost similar to the sample division rate in chapter 3. Therefore, it can be concluded that the survey data is suitable for use in analysis activities.
- Income structure: the group with income from 3 to 5 million has the highest rate with 39% of the total number of respondents. This is consistent with the income structure of Hanoi people and corresponds to the average income of the group of civil servants and office workers. Those
People with no income account for 23%, income under 3 million VND accounts for 13% and income over 5 million VND accounts for 25%.
4.2 Mobile phone usage in Hanoi inner city area
According to the survey results, most respondents said they had used the phone for more than 1 year, specifically: 68.4% used mobile phones from 4 to 10 years, 23.2% used from 1 to 3 years, 7.8% used for more than 10 years. Those who used mobile phones for less than 1 year accounted for only a very small proportion of ~ 0.6%. (Table 4.1)
Table 4.1: Time spent using mobile phones
Frequency
Ratio (%)
Valid Percentage
Cumulative Percentage
Alid
<1 year
5
.6
.6
.6
1-3 years
194
23.2
23.2
23.8
4-10 years
571
68.4
68.4
92.2
>10 years
65
7.8
7.8
100.0
Total
835
100.0
100.0
The survey indexes on the time of using mobile phones of consumers in the inner city of Hanoi are very impressive for a developing country like Vietnam and also prove that Vietnamese consumers have a lot of experience using this high-tech device. Moreover, with the majority of consumers surveyed having a relatively long time of use (4-10 years), it partly proves that mobile phones have become an important and essential item in peoples daily lives.
When asked about the mobile phone network they are using, 31% of respondents said they are using the network of Vietel company, 29% use the network of
of Mobifone company, 27% use Vinaphone companys network and 13% use networks of other providers such as E-VN telecom, S-fone, Beeline, Vietnammobile. (Figure 4.1).
Figure 4.1: Mobile phone network in use
Compared with the announced market share of mobile telecommunications service providers in Vietnam (Vietel: 36%, Mobifone: 29%, Vinaphone: 28%, the remaining networks: 7%), we see that the survey results do not have many differences. However, the statistics show that there is a difference in the market share of other networks because the Hanoi market is one of the two main markets of small networks, so their market share in this area will certainly be higher than that of the whole country.
According to a report by NielsenMobile (2009) [8], the number of prepaid mobile phone subscribers in Hanoi accounts for 95% of the total number of subscribers, however, the results of this survey show that the percentage of prepaid subscribers has decreased by more than 20%, only at 70.8%. On the contrary, the number of postpaid subscribers tends to increase from 5% in 2009 to 19.2%. Those who are simultaneously using both types of subscriptions account for 10%. (Table 4.2).
Table 4.2: Types of mobile phone subscribers
Frequency
Ratio (%)
Valid Percentage
Cumulative Percentage
Valid
Prepay
591
70.8
70.8
70.8
Pay later
160
19.2
19.2
89.9
Both of the above
84
10.1
10.1
100.0
Total
835
100.0
100.0
The above figures show the change in the psychology and consumption habits of Vietnamese consumers towards mobile telecommunications services, when the use of prepaid subscriptions and junk SIMs is replaced by the use of two types of subscriptions for different purposes and needs or switching to postpaid subscriptions to enjoy better customer care services.
In addition, the majority of respondents have an average spending level for mobile phone services from 100 to 300 thousand VND (406 ~ 48.6% of total respondents). The high spending level (> 500 thousand VND) is the spending level with the lowest number of people with only 8.4%, on the contrary, the low spending level (under 100 thousand VND) accounts for the second highest proportion among the groups of respondents with 25.4%. People with low spending levels mainly fall into the group of students and retirees/housewives - those who have little need to use or mainly use promotional SIM cards. (Table 4.3).
Table 4.3: Spending on mobile phone charges
Frequency
Ratio (%)
Valid Percentage
Cumulative Percentage
Valid
<100,000
212
25.4
25.4
25.4
100-300,000
406
48.6
48.6
74.0
300,000-500,000
147
17.6
17.6
91.6
>500,000
70
8.4
8.4
100.0
Total
835
100.0
100.0
The statistics in Table 4.3 are similar to the percentages in the NielsenMobile survey results (2009) with 73% of mobile phone users having medium spending levels and only 13% having high spending levels.
The survey results also showed that up to 31% ~ nearly one-third of respondents said they sent more than 10 SMS messages/day, meaning that on average they sent 1 SMS message for every working hour. Those with an average SMS message volume (from 3 to 10 messages/day) accounted for 51.1% and those with a low SMS message volume (less than 3 messages/day) accounted for 17%. (Table 4.4)
Table 4.4: Number of SMS messages sent per day
Frequency
Ratio (%)
Valid Percentage
Cumulative Percentage
Valid
<3 news
142
17.0
17.0
17.0
3-10 news
427
51.1
51.1
68.1
>10 news
266
31.9
31.9
100.0
Total
835
100.0
100.0
Similar to sending messages, those with an average message receiving rate (from 3-10 messages/day) accounted for the highest percentage of ~ 55%, followed by those with a high number of messages (over 10 messages/day) ~ 24% and those with a low number of messages received daily (under 3 messages/day) remained at the bottom with 21%. (Table 4.5)
Table 4.5: Number of SMS messages received per day
Frequency
Ratio (%)
Valid Percentage
Cumulative Percentage
Valid
<3 news
175
21.0
21.0
21.0
3-10 news
436
55.0
55.0
76.0
>10 news
197
24.0
24.0
100.0
Total
835
100.0
100.0
When comparing the data of the two result tables 4.4 and 4.5, we can see the reasonableness between the ratio of the number of messages sent and the number of messages received daily by the interview participants.
4.3 Current status of SMS advertising and Mobile Marketing
According to the interview results, in the 3 months from the time of the survey and before, 94% of respondents, equivalent to 785 people, said they received advertising messages, while only a very small percentage of 6% (only 50 people) did not receive advertising messages (Table 4.6).
Table 4.6: Percentage of people receiving advertising messages in the last 3 months
Frequency
Ratio (%)
Valid Percentage
Cumulative Percentage
Valid
Have
785
94.0
94.0
94.0
Are not
50
6.0
6.0
100.0
Total
835
100.0
100.0
The results of Table 4.6 show that consumers in the inner city of Hanoi are very familiar with advertising messages. This result is also the basis for assessing the knowledge, experience and understanding of the respondents in the interview. This is also one of the important factors determining the accuracy of the survey results.
In addition, most respondents said they had received promotional messages, but only 24% of them had ever taken the action of registering to receive promotional messages, while 76% of the remaining respondents did not register to receive promotional messages but still received promotional messages every day. This is the first sign indicating the weaknesses and shortcomings of lax management of this activity in Vietnam. (Table 4.7)
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