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

Question

This table displays 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? Express your answer as a decimal. Do not round your answer.

(2 points)
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. its not 90.9 or 90.5

Answer 1

To find the mean score of each class, we need to calculate the sum of the scores for each class and then divide by the number of students (10).

Class 1 Scores: 75, 80, 84, 79, 92, 86, 88, 86, 86, 90

Sum of Class 1 Scores: 75 + 80 + 84 + 79 + 92 + 86 + 88 + 86 + 86 + 90 = 84.0

Mean for Class 1: Mean = Total Sum / Number of Students = 86.0 / 10 = 86.0

Class 2 Scores: 83, 85, 91, 93, 72, 85, 76, 80, 82, 89

Sum of Class 2 Scores: 83 + 85 + 91 + 93 + 72 + 85 + 76 + 80 + 82 + 89 = 84.0

Mean for Class 2: Mean = Total Sum / Number of Students = 84.0 / 10 = 84.0

Now let's summarize the results:

• The mean score for Class 1 is 86.0.
• The mean score for Class 2 is 84.0.

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

Final Answer: The mean score for Class 1 is 86.0. The mean score for Class 2 is 84.0. Based on the mean, Class 1 generally performed better on the math test.