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AP® Statistics

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Histogram Spread

APSTAT-TXEX1D

The nurse at an elementary school measured the heights (in inches) of $17$ subjects and made the below histogram to display their heights.

Which of the following statements is/are correct concerning the spread of the histogram?

I. The range is exactly $20$ inches.

II. The IQR is approximately $6$ inches.

III. The standard deviation is about $8$ inches.

A

I and II only.

B

I and III only.

C

II only.

D

III only.

E

None of the listed statements is correct.