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).

Question

Quizplus · Accepted Answer

The approximate interval size (or interval width) can be found by dividing the range (R) by the number of categories (k). This will ensure that the frequency distribution has the appropriate number of categories to accurately depict the data.

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