Question
Two different groups of students (freshman and seniors) take a history test to determine their overall...
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Two different groups of students (freshman and seniors) take a history test to determine their overall knowledge about U.S. History. You are interested if seniors have more knowledge about U.S. History compared to freshman. Treat Seniors as group 1 and Freshmen as Group 2. The data for these two groups are below:
Seniors
Freshmen
80
79
86
80
89
82
75
81
79
72
96
74
82
89
84
84
91
78
85
90
What is the pooled variance?
35.72
71.44
38.23
33.21
Homework Answers
Answer #1
Ans : 35.72
Using Excel:
Data --> Data analysis --> t test for two sample equal variances
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