Use the following to answer the questions below:
Heights of 10-year-old girls (5th graders) follow an approximately normal distribution with mean inches and standard deviation of inches.
-What is the IQR of heights of 10-year-old girls? Note that you will need to find two endpoints of the distribution for your calculation. Report you answer with one decimal place.
A) 3.6 inches
B) 3.1 inches
C) 4.2 inches
D) 4.7 inches

Question

Quizplus · Accepted Answer

Q1, or 25th percentile: 52.6 inches
Q3, or 75th percentile: 56.2 inches
IQR = 56.2 - 52.6 = 3.6 inches

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