Читать книгу Student Study Guide to Accompany Statistics Alive! - Wendy J. Steinberg - Страница 21

1 Mean = 4.84; median = 4.75—that is, ; mode = 2 and 7 (both four occurrences).

2 The distribution is bimodal, so there is no appropriate measure of central tendency, although both 2 and 7 may be reported.

3 You should report the mean because it is the highest value. (And you should make your tests easier!)

4 The mean would be 53.6.

5 The mean would change toward the direction of the outlier, but the mode and median would be relatively unaffected.