To find the mean, we first need to calculate the sum of the products of each score and the number of students who received that score:
(60*9) + (65*5) + (70*1) + (75*6) + (80*2) + (85*3) + (90*1) + (95*4)
= 540 + 325 + 70 + 450 + 160 + 255 + 90 + 380
= 2270
Next, we need to sum the total number of students:
9 + 5 + 1 + 6 + 2 + 3 + 1 + 4
= 31
Finally, we divide the sum of the products by the total number of students to find the mean:
2270 / 31 ≈ 73.2
Therefore, the mean score on the recent exam is 73.2 to the nearest tenth.
The table displays the scores of students on a recent exam. Find the mean of the scores to the nearest tenth.
Score-Number of students
60 9
65 5
70 1
75 6
80 2
85 3
90 1
95 4
1 answer
1 answer