Calculate the interquartile range of the following data 17, 18, 18, 19, 20, 21, 21, 23, 25

4

Step-by-step explanation:

17, 18, 18, 19, 20, 21, 21, 23, 25

find the median first:

17, 18, 18, 19, 20, 21, 21, 23, 25

median: 20  

let's find the median of the lower half also known as Q1 (we won't include the 20)

lower quartile Q1            median     upper quartile Q3              

17, 18, 18, 19                       20             21, 21, 23, 25

(18+18 = 36, 36 ÷ 2 = 18)                 (21+23 = 44, 44÷2 = 22)

Q1: 18

Q3: 22

22 - 18 (Q3 - Q1)

22 - 18 = 4

Interquartile Range (IQR) = 4

answer: 20

step-by-step explanation: subtract the minimum date value from the maximum data value to find the date range. in this casem the date range is 42 - 22 = 20

hope this ! : ) ~zane

need more information

step-by-step explanation: