Directions:

Submit your results/answers electronically in a Microsoft word file (unless otherwise specified) to the google classroom assigned to the subject and to the classwork where this activity is posted with the filename: ACTIVITY3_GRADUATE_STATISTICS_FAMILY NAME. Those without internet connectivity may submit in hardcopy to the Office of the Dean addressed to Dr. Hafalla at room HB202, Centennial Building, UB. Do not forget to indicate your name, schedule and date in the subject heading of this paper. At the end of the semester, all submitted requirements and copies of the activities must be printed and compiled by you for submission to the Graduate School Office. The deadline of this activity is set by the professor. Future activities will be posted via the google classroom.

I. Individual Activity

1. High achiever students were classified as those having grades of 88% and above in a Science class. The following data depicts of the frequency of male and female students on this classification.

Gender	Type of Students
High Achiever	Low Achiever
Male	18	12
Female	10	6

Is there a relationship between the two variables (gender vs type of students)? Write Ho and Ha. Type properly the following data in SPSS or any other software or web-based program and do a Chi-square test of independence or manual computation (for manual computation use Yates correction factor, SPSS automatically calculate this). Print all relevant output of the analysis. Interpret the results.

2. The following data pertains to results of a survey of 180 individuals on the incidence of hypertension among smokers.

Incidence of Hypertension	Incidence of Smoking
Nonsmoker	Moderate Smoker	Heavy Smoker
Hypertension	21	36	30
No Hypertension	48	26	19

Test the hypothesis that the incidence of hypertension is independent of a person's smoking habit using Chi-square at the 0.05 level. Use SPSS/other software/web-based programs/manual computation. Print all relevant outputs and analysis. Interpret the p-value and your results if you used a software.

3. An experiment was designed to compare four methods of teaching SHS mathematics using 10 randomized samples from each of the four classes. One method employed in a class is the traditional chalk and board, the others are: utilizing EXCEL weekly, using Maple software, and the fourth utilizes both EXCEL and Maple software. The response variable is the score made by the randomly selected students on their comprehensive exam. Test the hypothesis that the method of teaching has no effect on the students' performance on the said subject. Write your Ho and Ha and use SPSS/other softwares/web-based programs (ie. xuru,org, for manual computation do a one-way ANOVA). Print all relevant results. Do a pairwise comparison test using Tukey's HSD. Interpret your results.

Table 1. Score on the comprehensive exam of students on four teaching methods

Teaching Method	Description of Teaching Method	Comprehensive Exam Score
A	Traditional (chalk and board)	75	68	82	76	72	70	76	71	83	70
B	Using EXCEL	76	70	76	66	79	75	83	79	73	77
C	Using MAPLE	76	67	77	80	73	80	75	73	75	80
D	Using both EXCEL and MAPLE	84	88	85	83	98	73	83	80	79	78