Question

Use the image to answer the question.

A bar graph shows the number of hours spent on math homework versus the number of students. The horizontal axis shows the time in hours ranging from 1 to 5 in increments of 1. The vertical axis shows the number of students ranging from 0 to 10 in increments of 1. The data with time in hours, followed by the number of students is as follows: 1 to 8, 2 to 6, 3 to 4, 4 to 2, and 5 to 1.

The graph shows the number of hours randomly selected students spent on math homework. What is the mean number of hours students spent on math homework?

(1 point)
Responses

9 hours
9 hours

2.14 hours
2.14 hours

1 hour
1 hour

1.4 hours
1.4 hours

Answer 1

Mean = (1·8 + 2·6 + 3·4 + 4·2 + 5·1) / (8+6+4+2+1) = 45/21 ≈ 2.14 hours.