Question

The dot plot below shows the number of toys 21 shops sold in an hour:

Is the median or the mean a better center for this data and why?

A.Median; because the data is not symmetric and there are outliers
B.Median; because the data is symmetric and there are no outliers
C.Mean; because the data is symmetric and there are no outliers
D.Mean; because the data is skewed and there are outliers

Answer 1

Answer: (A)

Median; because the data is not symmetric and there are outliers

Explanation:

Answer 2

Answer: A.Median; because the data is not symmetric and there are outliers

Explanation:

From the given dot plot , we can see that the data plot is skewed not symmetric .

Aldo there are outliers at 9 since most of the dots are between 0 to 4.

We know that the median provides better description of the center of the data then mean when the data is skewed.

Therefore , the median is a better center for this data because the data is not symmetric and there are outliers.