Outlier Lesson

Presentation

•

Mathematics

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9th - 12th Grade

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Practice Problem

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Medium

Katherine Morris

Used 2+ times

FREE Resource

3 Slides • 9 Questions

Outliers: Watch the following video, then continue on with the lessson.

https://youtu.be/9aDHbRb4Bf8

Effect of Outliers:

Outliers skew the mean
If the outlier is high, it makes the mean higher, low it makes the mean lower.
Median is a better representation in the presence of outliers

Numbers OUTSIDE the fence are OUTLIERS

Multiple Choice

What measure of center is most greatly effected by outliers?

Mean

Median

Mode

Range

Multiple Choice

What measure of spread is most greatly effected by outliers?

Median

Mean Absolute Deviation

Range

Interquartile Range

Multiple Choice

In the data set: 1,2,3,4,2,3,6,15

The number 15 is an outlier. What would happen to the mean if you removed the outlier.

It would stay the same

It would increase

It would decrease

IDK

Multiple Choice

In the following data set:

200,250,276,300,400,325

Identify the outlier(s)

There are no outliers

The outlier is 400

The outlier is 200

The outliers are 200 and 400.

Fill in the Blanks

According to the box plot the middle 50% of the data lies between ____ and____

Type answer...

Fill in the Blanks

According to the boxplot what is the median of the data set?

Type answer...

Fill in the Blanks

According to the boxplot what is the range of the lower 50% of the data?

Type answer...

Multiple Choice

Which measurement would change the most if you remove an outlier from a data set?

Mean

Median

IQR

Mode

Multiple Choice

In the following data set identify the outlier:

1,2,3,4,5,2,3,4,5,9,12

There is no outlier

The outlier is 9

The outlier is 12

There are two outliers, 9 and 12.

Outliers: Watch the following video, then continue on with the lessson.

https://youtu.be/9aDHbRb4Bf8

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