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11 minutes ago
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
80. 5
85 9
90 5
95 6
100 9

2 answers

To find the mean, we need to first calculate the sum of all the scores and the number of students:

Sum of scores = (80 x 5) + (85 x 9) + (90 x 5) + (95 x 6) + (100 x 9) = 400 + 765 + 450 + 570 + 900 = 3085

Number of students = 5 + 9 + 5 + 6 + 9 = 34

Mean = Sum of scores / Number of students = 3085 / 34 = 90.735

Rounding to the nearest 10th, the mean is 90.7.
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