Compare the two groups from question #8-13

The mean of the group that studied is about 16 points ________ than the mean of the group that did not study.
The MAD of the group that did not study is about ________ as much as the MAD of the group that did study.
There is more variation in the scores of the group that ________

1: lower, twice, did study
2: higher, twice, did not study
3: higher, half, did not study
4: lower, half, did study