Overview
A class of 25 students took a math test, and their scores are as follows: 68, 72, 75, 80, 85, 88, 90, 92, 95, 98, 62, 65, 70, 75, 78, 82, 85, 88, 92, 94, 96, 60, 75, 78, 80.
Calculate the mean (average) and standard deviation of the test scores for this class.