Stony Brook University

AMS 394

Question 1
a)
DATA Exam;
INPUT EXAM $ Score;
DATALINES;
E1 75
E1 88
E1 85
E1 100
E1 65
E1 10
E2 86
E2 84
E2 75
E2 99
E2 88
E2 60
E3 90
E3 97
E3 99
E3 76
E3 90
E3 80
;
PROC ANOVA DATA = EXAM;
CLASS EXAM;
MODEL SCORE = EXAM;
MEANS EXAM;
RUN;
The ANOVA Procedure
Dependent Variable: Score

The p value of ANOVA test is 0.3316 greater than 0.10, cannot reject the null hypothesis, the means of
score of 3 exams are not significantly different.
b)
DATA EXAM;
INPUT EXAM1 EXAM2 EXAM3;
DATALINES;
75 86 90
88 84 97
85 75 99
100 99 76
65 88 90