Three instructors are comparing scores on their finals; each had 99 students. In class A, one student got 1 point, another got 99 points, and the rest got 50 points.

In class B, 49 students got a score of 1, one student got a score of 50, and 49 students got a score of 99. In class C, one student got a score of 1, one student got a score of 2, one student got a score of 3, and so forth, all the way through 99.

(a) Which class had the biggest average? or are they the same?

(b) Which class had the biggest SD? or are they the same?

(c) Which class had the biggest range? or are they the same? p-968