Question

These are the mean scores on math benchmarks for 7 th and 8 th graders by class periods. What is the difference between the mean scores of the 7th and Bth graders?

Answer 1

The difference between the mean scores of the 7th and 8th graders is 27.

Step-by-step explanation:

To find the difference between the mean scores of the 7th and 8th graders, we need to calculate the mean scores separately for both grade levels and then find the difference.

For the 7th graders, the mean score is 74.

For the 8th graders, the mean score is 47.

Therefore, the difference between the mean scores of the 7th and 8th graders is 74 - 47 = 27.