Compute IQR for the following data 10 15 17 21 25 12 16 11 1

Compute IQR for the following data. 10 15 17 21 25 12 16 11 13 22

InterQuartile Range = Third Quartile - First Quartile = Q3-Q1

First Quartile=Q1 = 25the Percentile

We can use here Excel function for 25th Percentile =PERCENTILE(insert the range of the data,0.25) we will get 12.25

Third Quartile =Q3 = 75th Percentile

We can use here Excel function for 75th Percentile =PERCENTILE(insert the range of the data,0.75) we will get =20

InterQuartile Range = Third Quartile - First Quartile = Q3-Q1 = 20-12.25 = 7.75