Question

Here are the math test scores of 10 randomly selected students from Class 1 and Class 2.

Class 1: | 75 | 80 | 84 | 79 | 92 | 86 | 88 | 86 | 86 | 90 |
Class 2: | 83 | 85 | 91 | 93 | 72 | 85 | 76 | 80 | 82 | 89 |
Find the mean score of each sample. Based on the mean, which class generally performed better on the math test?
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

[AI-generated answer — Bot GPT 3.5]

To find the mean score of each sample, we add up all the scores and divide by the number of students in each class.

For Class 1:
(75 + 80 + 84 + 79 + 92 + 86 + 88 + 86 + 86 + 90) / 10 = 870 / 10 = 87

The mean score for Class 1 is 87.

For Class 2:
(83 + 85 + 91 + 93 + 72 + 85 + 76 + 80 + 82 + 89) / 10 = 846 / 10 = 84.6

The mean score for Class 2 is 84.6.

Comparing the mean scores, Class 1 generally performed better on the math test.