Question

Use the IQR to determine if any of the data in the data set are outliers.

{23,80,43,23,0,20,23,23,20,28}

Answer 1

Using the IQR, the only outlier in the data set is: 0.

What is the IQR of a Data Set?

IQR = upper quartile (Q3) - lower quartile (Q1).

Given the data set, 23,80,43,23,0,20,23,23,20,28:

Quartile (Q1): 20

Quartile (Q3): 31.75

IQR = 31.75 - 20 = 11.75

The outliers are data values that lie below:

Q1  - (1.5 × IQR) = 20 - (1.5 × 11.75) = 2.375

And data values that are above:

Q3 + (1.5 × IQR) = 31.75 + (1.5 × 11.75) = 49.375

Therefore, the only outlier is: 0.

Learn more about the IQR on:

https://brainly.com/question/4102829

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