Question

on her first six test, Sandra's scores were 75 70 80 80 85 and 90 find the mean of the six scores

Answer 1

Answer:  80

Explanation:

First add up the scores: 75+70+80+80+85+90 = 480

Then divide by n = 6 because there are 6 scores. We get 480/n = 480/6 = 80 as the mean.