Eva is curious how much students at her school sleep
calculate the mean number of hours that all 10 students slept
1 student slept 6
3 students slept 7
2 slept 8
1 slept between 6 and 7 '
1 slept between 9 and 10
To calculate the mean number of hours all 10 students slept, you would add up the total number of hours slept by each student and then divide by the total number of students.
(1 x 6) + (3 x 7) + (2 x 8) + (1 x 6.5) + (1 x 9.5) = 6 + 21 + 16 + 6.5 + 9.5 = 59
Now, divide the total number of hours slept by the total number of students:
59 / 10 = 5.9
Therefore, the mean number of hours that all 10 students slept is approximately 5.9 hours.