Here are some summary statistics for all of the runners in a local 12 kilometre race: slowest time = 132 minutes,mean = 76 minutes,median = 76 minutes,range = 102 minutes,IQR = 62,Q1 = 30,standard deviation = 10 minutes.Between what two values are the middle 50% of times?
A)15.2 and 60.8
B)132 and 30
C)19 and 57
D)38 and 76
E)30 and 92

Question

Quizplus · Accepted Answer

The middle 50% of times are between the first quartile (Q1) and the third quartile (Q3). Given Q1 = 30 and IQR = 62, Q3 = Q1 + IQR = 30 + 62 = 92. Therefore, the middle 50% of times are between 30 and 92.

Here Are Some Summary Statistics for All of the Runners