Question

1 which of the dot plots shows a symmetric distribution? a 9 10 11 12 13 14 15 16 17 18 19 20 b 9 10 11 12 13 14 15 16 17 18 19 20 c 1 2 3 4 5 6 7 8 9 10 11 12 d 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9

Explanation:

Step1: Recall symmetric - distribution definition

A symmetric distribution has a mirror - image on either side of the center.

Step2: Analyze Option A

Option A is not symmetric as the left and right sides do not mirror each other.

Step3: Analyze Option B

Option B is symmetric. If we draw a vertical line through the center (around 14 - 15), the number of dots on the left and right sides are approximately mirror images of each other.

Step4: Analyze Option C

Option C is not symmetric. The pattern of dots on the left and right sides is different.

Step5: Analyze Option D

Option D is not symmetric. The distribution of dots is not mirrored on either side of a central point.

Answer:

B.