Question

the dot plots show the number of miles run per week for two different classes. class a (miles) class b (miles) a class a is skewed right; spread is 14 b class b is skewed left; spread is 9 c class b is symmetric; spread is 5 d class a is skewed left; spread is 12

Explanation:

Step1: Determine skewness of Class A

Most data - points of Class A are on the left, so it is skewed right.

Step2: Calculate spread of Class A

Spread = maximum value - minimum value. For Class A, maximum = 14 and minimum = 2, so spread = 14 - 2=12.

Step3: Determine skewness of Class B

Class B is symmetric as the data is evenly distributed around the center.

Step4: Calculate spread of Class B

For Class B, maximum = 10 and minimum = 4, so spread = 10 - 4 = 6.

Answer:

D. Class A is skewed left; spread is 12