Fifteen students took a statistics pre-test and post-test. The results are below (a score of 28 is considered a perfect score). Round your answers to the nearest tenth, if necessary.

Student	Pre-Test	Post-Test
1	9	22
2	11	28
3	9	18
4	4	24
5	10	25
6	11	16
7	9	19
8	9	20
9	7	18
10	8	14
11	5	16
12	15	26
13	12	21
14	0	14
15	9	13

(a) Find the mean pre-test score.



(b) Find the median pre-test score.



(c) Find the mean post-test score.



(d) Find the median post-test score.

Here are the results for the statistics pre-test and post-test scores:

(a) The mean pre-test score is \( 8.5 \).

(b) The median pre-test score is \( 9.0 \).

(c) The mean post-test score is \( 19.6 \).

(d) The median post-test score is \( 19.0 \).

Would you like more details or have any questions?

Here are 5 related questions to further your understanding:

1. What is the mode of the pre-test scores?
2. How does the range of the pre-test scores compare to the range of the post-test scores?
3. What is the standard deviation of the post-test scores?
4. How would you interpret the difference between the mean and median in both tests?
5. What percentage improvement is seen on average from pre-test to post-test?

**Tip:** When analyzing data, comparing the mean and median can help identify whether the data distribution is skewed or symmetric.

Fifteen students took a statistics pre-test and post-test. The results are below (a score of 28 is considered a perfect score). Round your answers to the nearest tenth, if necessary.

Student Pre-Test Post-Test
1 9 22
2 11 28
3 9 18
4 4 24
5 10 25
6 11 16
7 9 19
8 9 20
9 7 18
10 8 14
11 5 16
12 15 26
13 12 21
14 0 14
15 9 13

(a) Find the mean pre-test score.

(b) Find the median pre-test score.

(c) Find the mean post-test score.

(d) Find the median post-test score.

This page provides a detailed solution to a statistics problem where 15 students' pre-test and post-test scores are analyzed. Learn how to calculate the mean and median for both tests and understand key statistical concepts like measures of central tendency. Suitable for high school students in Grades 9-12.

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