What is the interquartile range of 86, 72, 85, 89, 86, 92, 73, 71, 91, 82?

1 Answer
May 29, 2017

IQR=16

Explanation:

arrange the data set in ascending order

71x72x73x82x85x86x86x89x91x92

the quartiles split the data into 4 groups

the median Q2=85+862=85.5

the lower quartile Q1=73

the upper quartile Q3=89

the interquartile range (IQR)=Q3Q1

theerquartiran××x=8973
theerquartiran××x=16