Question

The test scores for the chapter 5 test in algebra I were: 75, 95, 90, 95, 60, 95, 75, 95, 90

Question:
a. find the mean, median, mode, and range of the data
b. Which measure best describes the set of data? Why?
c. if test scores of 65 and 75 were added to the set, what would happen to the mean?

Answer 1

Mean: 85.55
Median: 90
Mode: 95
Rage of Data: 35

Explanation:

B) the mean is widely preferred as the best measure of central tendency because it is the measure that includes all the values in the data set for its calculation, and any change in any of the scores will affect the value of the mean.

C) the mean would become smaller.