Question

The first quartile of a data set is 72, and the third quartile is 92. Which of these values in the data set is an outlier?

A. 121
B. 101
C. 41
D. 61

Answer 1

Subtract the lower quartile 72 from the upper quartile 92.

Post what you get. The number you get is known as the Interquartile Range, denoted by IQR.

Answer 2

@lilkg77 ^^^ Please answer so that we can go to the next step. Thanks.

Answer 3

20

Answer 4

Okay.

What is 1.5 times 20 =

Answer 5

@lilkg77 ^^^ Question waiting for you. :)

Answer 6

30 @Directrix

Answer 7

@Directrix

Answer 8

Correct.

A data point is an upper outlier if it if has value greater than the upper quartile + 30.

Q3, the upper quartile, is 92.

Q3 + 1.5 IQR = 92 + 30 = 122.

Look at the answer options.

Is there a number given which is greater than 122.
@lilkg77

Answer 9

After you answer, we will check to see if there is a lower outlier.

Answer 10

>>Is there a number given which is greater than 122.

Choose from these:

A. 121
B. 101
C. 41
D. 61

Answer 11

@lilkg77