Question
Here are the math test scores of 10 randomly selected students from Class 1 and Class 2.
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.
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.
Answers
GPT-4o mini
To find the mean score for each class, we add up the scores and then divide by the number of students in each class.
**Class 1 scores:**
75, 80, 84, 79, 92, 86, 88, 86, 86, 90
- Sum = 75 + 80 + 84 + 79 + 92 + 86 + 88 + 86 + 86 + 90 = 909
- Mean = 909 / 10 = **90.9**
**Class 2 scores:**
83, 85, 91, 93, 72, 85, 76, 80, 82, 89
- Sum = 83 + 85 + 91 + 93 + 72 + 85 + 76 + 80 + 82 + 89 = 905
- Mean = 905 / 10 = **90.5**
Now, comparing the two means:
- Mean score for Class 1: **90.9**
- Mean score for Class 2: **90.5**
Based on the mean, Class 1 generally performed better on the math test.
Final answer:
The mean score for Class 1 is **90.9**. The mean score for Class 2 is **90.5**. Based on the mean, Class **1** generally performed better on the math test.
**Class 1 scores:**
75, 80, 84, 79, 92, 86, 88, 86, 86, 90
- Sum = 75 + 80 + 84 + 79 + 92 + 86 + 88 + 86 + 86 + 90 = 909
- Mean = 909 / 10 = **90.9**
**Class 2 scores:**
83, 85, 91, 93, 72, 85, 76, 80, 82, 89
- Sum = 83 + 85 + 91 + 93 + 72 + 85 + 76 + 80 + 82 + 89 = 905
- Mean = 905 / 10 = **90.5**
Now, comparing the two means:
- Mean score for Class 1: **90.9**
- Mean score for Class 2: **90.5**
Based on the mean, Class 1 generally performed better on the math test.
Final answer:
The mean score for Class 1 is **90.9**. The mean score for Class 2 is **90.5**. Based on the mean, Class **1** generally performed better on the math test.