To find the mean score for each sample, we add up all the scores and divide by the number of students in each class.
Class 1 mean score:
(75 + 80 + 84 + 79 + 92 + 86 + 88 + 86 + 86 + 90) / 10 = 866 / 10 = 86.6
Class 2 mean score:
(83 + 85 + 91 + 93 + 72 + 85 + 76 + 80 + 82 + 89) / 10 = 846 / 10 = 84.6
Therefore, the mean score for Class 1 is 86.6 and the mean score for Class 2 is 84.6. Based on the mean score, Class 1 generally performed better on the math test than Class 2.
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?
(2 points)
. Based on the mean, Class
generally performed better on the math test.
1 answer
1 answer