Mean vs. Median of Students' Scores

A class of 10 students took a math test. The scores of the students were: 56, 68, 72, 74, 78, 80, 82, 85, 87, and 90.

Using this data, calculate the following:

• Quantity A: The mean (average) score of the class.
• Quantity B: The median score of the class.