which is a negatively skewed distribution?

Answer:

A.

Explanation:

Step1: Recall skewness definition

In a negatively - skewed distribution, the tail is on the left - hand side. The mean is less than the median.

Step2: Analyze box - and - whisker plot in A

In option A, the left whisker is longer than the right whisker. This indicates that there are some relatively small values pulling the left - hand side (tail) out, which is characteristic of a negatively skewed distribution.

Step3: Analyze box - and - whisker plot in B

In option B, the box and whiskers are more symmetric, not indicating a strong skew.

Step4: Analyze histogram in C

The histogram in option C is approximately symmetric, not negatively skewed.

Step5: Analyze dot - plot in D

The dot - plot in option D is also approximately symmetric, not negatively skewed.