The values given below are snow depths measured as part of a study of satellite observations and water resources.
19, 18, 12, 25, 22, 8, 8, 16

-What is the IQR?
A)10.5
B)18.375
C)36.75
D)21.25
E)30.25

Question

The values given below are snow depths measured as part of a study of satellite observations and water resources.
19, 18, 12, 25, 22, 8, 8, 16

-What is the IQR?
A)10.5
B)18.375
C)36.75
D)21.25
E)30.25

Quizplus · Accepted Answer

The Interquartile Range (IQR) is the difference between the third quartile (Q3) and the first quartile (Q1) in a data set. First, we need to arrange the data in ascending order: 8, 8, 12, 16, 18, 19, 22, 25. For this set of 8 numbers, Q1 is the average of the 2nd and 3rd values (8 and 12), which is 10, and Q3 is the average of the 6th and 7th values (19 and 22), which is 20.5. The IQR = Q3 - Q1 = 20.5 - 10 = 10.5.

The Values Given Below Are Snow Depths Measured as Part