The table below shows the scores of a group of students on a 10-point quiz.

test score frequency
3 0
4 1
5 1
6 1
7 2
8 1
9 5
10 5

the mean score on this test is:

the median score on this test is:

Mean is 5.75, median is 9

Step-by-step explanation:

First spread it all out:

4, 5, 6, 7, 7, 8, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10

To get mean, add all numbers and then divide the sum by the # of scores.

The sum of all those numbers is 92. There are 16 numbers. 92 / 16 = 5.75

To get median, find the center number in the list of all numbers.

Unfortunately, there is no "center number" because there are 16 in total (8 on one side, 8 on the other).

Instead, just find add the 8th and 9th number and divide by 2 to find the middle.

8th number is 9, 9th is 9, so median is 9

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