Question

Natasha surveyed a group of students and recorded the number of letters in their first name. She displayed the data in the following dot plot.

Which is the best measure of center for the data?

A. interquartile range
B. mean
C. mean absolute deviation
D. median

Answer 1

the answer is D: median

Explanation:

Median and mean are measures of center.

Mean is best to use when the data distribution is symmetric or mostly symmetric, whereas median is best to use when the data distribution is not symmetric, or skewed.

Since the data distribution is skewed and not symmetric, the median is the best measure of center for the data.