Here are 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 mean, which class generally performed better on the math test?
The mean test score for Class 1 is ___ . The mean score for Class 2 is ____ . Based on the mean, Class ____ generally performed better on the math test.
The mean test score for Class 1 is (75 + 80 + 84 + 79 + 92 + 86 + 88 + 86 + 86 + 90) / 10 = 85.
The mean test score for Class 2 is (83 + 85 + 91 + 93 + 72 + 85 + 76 + 80 + 82 + 89) / 10 = 83.6.
Based on the mean, Class 1 generally performed better on the math test.