Question
Maddy had four tests this week. Her scores were 78, 85, 75, and 92.(1 point)
What is the MEAN of her test scores? Do not round your answer.
What is the MEDIAN of her test scores? Do not round your answer.
What is the MEAN of her test scores? Do not round your answer.
What is the MEDIAN of her test scores? Do not round your answer.
Answers
GPT-4o mini
To find the mean and median of Maddy's test scores (78, 85, 75, and 92), we can follow these steps:
### Mean:
1. First, add all the scores together:
\[
78 + 85 + 75 + 92 = 330
\]
2. Then, divide the sum by the number of tests (which is 4):
\[
\text{Mean} = \frac{330}{4} = 82.5
\]
### Median:
1. Next, arrange the scores in ascending order:
\[
75, 78, 85, 92
\]
2. Since there is an even number of scores (4), the median is the average of the two middle numbers (78 and 85):
\[
\text{Median} = \frac{78 + 85}{2} = \frac{163}{2} = 81.5
\]
### Summary:
- **Mean:** 82.5
- **Median:** 81.5
### Mean:
1. First, add all the scores together:
\[
78 + 85 + 75 + 92 = 330
\]
2. Then, divide the sum by the number of tests (which is 4):
\[
\text{Mean} = \frac{330}{4} = 82.5
\]
### Median:
1. Next, arrange the scores in ascending order:
\[
75, 78, 85, 92
\]
2. Since there is an even number of scores (4), the median is the average of the two middle numbers (78 and 85):
\[
\text{Median} = \frac{78 + 85}{2} = \frac{163}{2} = 81.5
\]
### Summary:
- **Mean:** 82.5
- **Median:** 81.5