Answer:
Step-by-step explanation:
Given : Data set {48, 50, 65, 60, 80, 42, 45, 50, 42, 55, 45}.
To find : What is the interquartile range of the data set?
Solution : We have Data set {48, 50, 65, 60, 80, 42, 45, 50, 42, 55, 45}.
Order the number:
42,42,45,45,48,50,50,55,60,65,80
.
Median : (42,42,45,45,48),50,(50,55,60,65,80
).
50 is the median .
Median of first quartile Q1 : 45.
Median of second quartile Q2 : 60.
interquartile range = Q2-Q1 = 60-45 = 15.
Therefore, Interquartile range is 15.
