To find the mean, we need to first find the sum of all the scores, multiplied by the number of students who received each score.
(60 x 9) + (65 x 5) + (70 x 1) + (75 x 6) + (80 x 2) + (85 x 3) + (80 x 1) + (95 x 4) = 3915
Then we need to divide that sum by the total number of students:
9 + 5 + 1 + 6 + 2 + 3 + 1 + 4 = 31
3915 / 31 = 126.29
To the nearest 10th, the mean score is 126.3.
The table displays the scores of students on a recent exam. Find the mean of the scores to the nearest 10th.
Score: 60, 65, 70, 75, 80, 85, 80, 95
Number of students: 9, 5, 1, 6, 2, 3, 1, 4
1 answer
1 answer