A cumulative frequency polygon is also called （）.

If the individual class frequency is divided by the total frequency, the result is the （）.

A.midpoint frequency
B.cumulative frequency
C.stem and leaf plot
D.relative frequency

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If data are grouped into intervals and the number of items in each group is listed, this could be called a （）

A.ogive
B.histogram
C.frequency distribution
D.stem and leaf plot

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