Question

select the correct answer. the dot plots represent the intelligence quotients, or iqs, for fourth - grade students in two different classes. intelligence quotient for fourth grade student in class 1 number of students 90 95 100 105 110 115 120 125 130 intelligence quotient intelligence quotient for fourth grade student in class 2 number of students 90 95 100 105 110 115 120 125 130 intelligence quotient which statement is true? a. both dot plots are symmetric. b. one dot plot is skewed left, and the other is skewed right. c. both dot plots are skewed left. d. both dot plots are skewed right.

Explanation:

Step1: Analyze Class 1 dot - plot

The dot - plot for Class 1 has more data points on the left - hand side of the peak (around 100) and fewer data points on the right - hand side. So, it is skewed right.

Step2: Analyze Class 2 dot - plot

The dot - plot for Class 2 has more data points on the left - hand side of the peak (around 100) and fewer data points on the right - hand side. So, it is also skewed right.

Answer:

D. Both dot plots are skewed right