. Over winter vacation, Serena's class was assigned to read at least 200 pages of a book. When school started again, she asked her teammates and the next closest team how many pages each of them had read. The answers were: 220, 312, 250, 483, 200, 0, 275, and 495. Homework Help ✎

1. Calculate the mean, median, and mode for the number of pages read.

2. If the person who did not do the assignment is not counted, how do the measures of central tendency change?