Question

The table shows the scores of a biology test in Mrs. Smiths class . Find the mean of the data without Kim’s score.

A- 80
B- 87.2
C- 90
D- 84.5

Answer 1

87.2

Explanation:

90+93+87+83+86+90+82=611

611/7=87.29

answer is b

Answer 2

To find the mean, you add up all the values and divide by how many there is. So... excluding Kim’s score there are 7 students scores. Now add all the scores up which will give you 611. 611/7 = 87.286

That will give you B

Hope this helps! :)