The table displays the scores of students on a recent exam. Find the mean of the scores to the nearest 10th.
Score Number of Students
6565 44
7070 88
7575 66
8080 33
8585 66
9090 66
Answer
Attempt 2 out of 2
To find the mean of the scores, we first need to calculate the sum of all the scores multiplied by the number of students who scored that amount.
(65 * 44) + (70 * 88) + (75 * 66) + (80 * 33) + (85 * 66) + (90 * 66) = 2860 + 6160 + 4950 + 2640 + 5610 + 5940 = 28160
Next, we need to find the total number of students:
44 + 88 + 66 + 33 + 66 + 66 = 363
Finally, to find the mean, we divide the sum by the total number of students:
28160 / 363 = 77.6
Therefore, the mean score of the students on the recent exam is 77.6 to the nearest 10th.