Iqr, Outliers, Standard Deviation, Mean, Median

Given the following distributions, which has the smallest IQR?

• Red

• Purple

• Black

Given the following distributions, which has the highest median?

• Red

• Purple

• Black

Given a set of symmetric data, which of the following is an appropriate measure of spread?

• Mean

• Median

• Standard Deviation

• Interquartile Range (IQR)

Given a set of skewed data, which is an appropriate measure of spread?

• Mean

• Median

• Standard Deviation

• Interquartile Range (IQR)

Given the 5 number summary, the maximum is an outlier.

• True

• False

Given the 5 number summary, the minimum is an outlier.

• True

• False

Given the 5 number summary, Find the lower fence.

• 171.5

• 15.5

• 43.4

• 7

Pick the definition of an outlier.

• A value that lies outside of most other values in a data set.

• A value that is the largest.

• A value that is the smallest.

• A value that occurs the most.

If we use the mean to measure the typical value or center of the data, we would use the _________ to measure the variability.

• IQR

• Median

• Mean

• Standard Deviation

If outliers are removed, what changes more significantly the mean or median?

• Mean

• Median