Question

a librarian was trying to figure out the number of books in the nonfiction section. the values below represent the numbers of books on each shelf of a corner bookcase. 27, 15, 23, 15, 22, 18, 16, 14, 23, 25, 13, 29 which measure of central tendency should the librarian use? the mean the median either the mean or median since they are the same neither the mean nor median because there is too much variability

Explanation:

Step1: Check for outliers

The data set is 27, 15, 23, 15, 22, 18, 16, 14, 23, 25, 13, 29. There are no extreme outliers that would skew the mean significantly.

Step2: Recall mean - median properties

The mean takes into account all values in the data - set and is the sum of all values divided by the number of values. The median is the middle value when the data is ordered. For a data - set with no extreme outliers, both the mean and median can be good measures of central tendency.

Answer:

either the mean or median since they are the same