Here are the math test scores of 10

Question

randomly selected students from Class 1 and Class 2.
Find the mean score of each sample.
Based on the mean, which class generally performed better on the math test?
(2 points)
1:

Class 75 80 84 79

92
86
88 86

86
• 90
2:

Class 83 85 91 93 72 85 76 80 82 89

く
The mean score for Class 1 is
. The
mean score for Class 2 is
. Based
on the mean, Class generally

performed better on the math test.

Answer 1

The mean score for Class 1 is (75+80+84+79+92+86+88+86+86+90)/10 = 83.6.

The mean score for Class 2 is (83+85+91+93+72+85+76+80+82+89)/10 = 83.6.

Since both classes have the same mean score of 83.6, they generally performed equally well on the math test.