Appropriate Measures of Center and Variation

Multiple Select

Select the (2) measures of CENTER.

• Mean

• Median

• IQR

• Range

Multiple Select

Select the (2) measures of VARIABILITY.

• Mean

• Median

• IQR

• Range

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​Remember!

Mean and Range ARE affected by outliers and therefore are not great choices when outliers are present.

​Median and IQR ARE NOT affected by outliers as much and therefore are a better choice when outliers are present.

Multiple Choice

If there is an Outlier in the set which measure of CENTER would you use?

• Mean

• Median

• IQR

• Range

Multiple Choice

If there is NOT an Outlier in the set which measure of VARIABILITY would you use?

• Mean

• Median

• IQR

• Range

Multiple Select

Which measurements would represent the BEST measures of center & variability for the data set shown?

26, 29, 24, 33, 31, 43, 17, 84, 23, 27, 29

• Mean

• Median

• IQR

• Range

Multiple Select

Which measurements would represent the BEST measures of center & variability for the data set shown?

8, 7, 6, 5, 4, 4, 3, 2, 9, 7

• Mean

• Median

• IQR

• Range

Drag and Drop

For this data set, the​

Placeholder

is the best measure of center and the​

Placeholder

is the better measure of variation.

Drag these tiles and drop them in the correct blank above

median

IQR

range

mean

mode

Multiple Select

Study the graph and determine one measure of center and one measure of variability that would best describe the data. (hint: are there outliers?)

• Range

• Median

• Mean

• IQR

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