When Constructing Frequency Distributions for Variables Measured at the Interval-Ratio

Multiple Choice

When constructing frequency distributions for variables measured at the interval-ratio level, approximate interval size (or interval width) can be found by________.

A) dividing sample size (N) by 10.
B) multiplying the number of categories by the lowest score.
C) dividing the range by the sample size (N) .
D) dividing the range (R) by the number of categories (k) .