To find the mean, we need to calculate the total number of hours spent and divide by the total number of students:
Total hours = (8 x 1) + (6 x 2) + (4 x 3) + (2 x 4) + (1 x 5) = 8 + 12 + 12 + 8 + 5 = 45
Total students = 8 + 6 + 4 + 2 + 1 = 21
Mean number of hours = Total hours / Total students = 45 / 21 ≈ 2.14 hours
Therefore, the answer is (a) 2.14 hours.
8 students spend 1 hour
6 students spend 2 hours
4 students spend 3 hours
2 students spend 4 hours
1 students spend 5 hours
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?
a 2.14 hours
b 9 hours
c 1.4 hours
d 1 hours
1 answer