Respuesta :

The median score would be A.) 74.

To find the median in this question you have to find which of these test scores is in the middle.

To do this, order all the numbers from least to greatest like so:
21, 69, 71, 74, 74, 83, 84, 89, 91

Then find which number is in the middle of the line, in this case it would be 74.
Arrange all the average test score from least to greatest. The middle number will be the median. The median can be one or two.