I am interested in whether males and females have the same grade point average. Use the table to perform a difference of means test and tell me the result of the test. (Remember you have to calculate the variance for each variable using the equation with n-1 in the denominator)
Obs |
Males |
Females |
1 |
3.84 |
2.93 |
2 |
2.5 |
2.98 |
3 |
3.25 |
1.48 |
4 |
2.77 |
1.77 |
5 |
3.69 |
2.76 |
6 |
2.02 |
1.89 |
7 |
2.05 |
3.29 |
8 |
3.01 |
1.19 |
sums |
||
mean |
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variance |
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