Statistics presentation Study on Tardiness of students in Hanoi University GROUP Tut1_BA OUTLINE I Research methodology II Descriptive results and findings III Hypothesis testing IV Evaluation I Research methodology Population and sample Questionarie design Sample size Sampling method Data collection Population and sample • • Population: Hanoi university’s students Sample: 100 students 2.Questionaire design Total: questions about tardiness opinion  questions: - What they think about the habits of going to class late - how often they come to university late  questions: - Reason - Results from this habit  question: Experience that students gain from the results  questions: - Whether they change habit - Method Sample size • 100 students Sampling method • Deliver questionnaire to 100 students & selected exactly 100 students Data collection • Collecting data: - face to face communication - Google form • • • Organizing and presenting: Chart and graphs Hypothesis testing Discussion and analysis II Descriptive results and findings • • • Questionnaire : 11 questions questions : personal information (name, email, gender & school year) questions : opinion about tardiness Q1 What is your opinion on tardiness? nearly 1/3 of the HANU students are aware of the importance of the time they come to class for their study Q2 How often you come to university late a week? 82 students being late equal or more than day a week => change behavior Q3 What is the main reasons which make you come to class late? The majority of them are interrupted by traffic jam ( 55 students) and the difficulty in waking up early ( 48 students) Q4 What are the results for coming late? 63% => bad habit for students & influence on others Q5 Do you gain experience from the results of coming late? Q6 Will you change your late habits? Q7 How will you change your late habits? III HYPOTHESIS TESTING Research question • Design 7Qs  should change tardiness habits of HANU students or not Assumption ôYesằ and ôNoằ answers qualitative data Binominal distribution • Parameter of interest: (p) • More than 70% students coming late to school with equal or greater than day • should change their habit Data analysis • Sample size: n =100 (np=100x0.7=70>5; n(1-p)=100x0.3=30>5) • Z-test (upper tail test) • H0 : p 0.7 • Significant level: α = 0.05 • Critical value is Z0.05≈ 1.645 Reject H0 if Z>1.645 Hypothesis testing procedure • Step 1: The null and alternative hypotheses H0: p≤ 0.7 Ha: p> 0.7 • Step 2: Test statistic z= • (with q=1-p=0.3, p^=82/100=0.82) Step 3: Significant level α = 0.05 • Step 4: Decision rule Reject H0 if Z >1.645 • • Step 5: Value of test statistic Step 6: Conclusion Z = 2.62 > 1.645 , we reject H0 P-value • With z = 2.62, we have: p-value = P (Z > 2.62) = -0.9956 = 0.0044 there is enough evidence at the level of significance α = 0.05  Ha is true there is enough evidence to conclude that more than 70% of Hanu students should change their late-for-class habits IV Evaluation Limitation Implication Recommendation Conclusion Limitation - Poor self awareness on the matter Dishonesty in answering survey Implication - Consequential realization Willingness to change Recommendation - Stop using electronics before going to bed => sleep early - Reschedule timetable to avoid coincident; go to school a few minutes early Motivate yourself Conclusion - Determine situation: current rate and awareness Significance of punctuality Apply recommendation => Improve ... questions : opinion about tardiness Q1 What is your opinion on tardiness? nearly 1/3 of the HANU students are aware of the importance of the time they come to class for their study Q2 How often... collection Population and sample • • Population: Hanoi university s students Sample: 100 students 2.Questionaire design Total: questions about tardiness opinion  questions: - What they think about... Recommendation Conclusion Limitation - Poor self awareness on the matter Dishonesty in answering survey Implication - Consequential realization Willingness to change Recommendation - Stop using electronics