she realizes one of the "avrages" was 79... she just can't remember if it was the mean or median. She also remembered that 27 students took the test, the test was out of 100 points, and 18 of them scored 70 or greater, and of those, 7 scored higher than 90.

Question

A. If the median is 70, what is the minimum that the class mean would be? Record the class data: show all work.
B. If the median is 70, what is the maximum that the class mean would be? Record the class data: show all work.
C. If the median is 70, what is the minimum that the class median would be? Record the class data: show all work.
D. If the median is 70, what is the maximum that the class median would be? Record the class data: show all work.

Answer 1

There are 27 scores
9 scored below 70
11 scored between 70 and 90
7 scored above 90
The median score is #14, so it was between 70 and 90
B. The maximum mean would be (9*69+(5*70+6*90)+7*100)/27 = 81.9
see what you can do on the other questions.