Question

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
70
6
75
80
85
90
95
3
9
5
7
8
2

Answer 1

To find the mean of the scores in the table, you need to multiply each score by the number of students who received that score, add up all the products, and divide by the total number of students.
The sum of all the products is 70 x 6 + 75 x 3 + 80 x 9 + 85 x 5 + 90 x 7 + 95 x 8 + 6 x 1 + 3 x 1 + 9 x 1 + 5 x 1 + 7 x 1 + 8 x 1 + 2 x 1 = 4,190.
The total number of students is 41.
Therefore, the mean of the scores is 102.2 rounded to the nearest tenth 1.
So the answer is 102.2.