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?
To find the mean (average), add up all the scores in each class and divide by the number of scores.
For Class 1:
Mean score = (75 + 80 + 84 + 79 + 92 + 86 + 88 + 86 + 86 + 90) / 10 = 85.6
For Class 2:
Mean score = (83 + 85 + 91 + 93 + 72 + 85 + 76 + 80 + 82 + 89) / 10 = 83.6
Based on the mean score, Class 1 generally performed better on the math test with a mean score of 85.6 compared to Class 2's mean score of 83.6.
To find the mean score of each sample, we need to add up all the scores and divide by the number of scores in each class.
Class 1: 75 + 80 + 84 + 79 + 92 + 86 + 88 + 86 + 86 + 90 = 846
Mean score of Class 1 = 846 / 10 = 84.6
Class 2: 83 + 85 + 91 + 93 + 72 + 85 + 76 + 80 + 82 + 89 = 826
Mean score of Class 2 = 826 / 10 = 82.6
Based on the mean score, Class 1 generally performed better on the math test.