State the two ways to determine the number of intervals when preparing histogram. Use these two...
State the two ways to determine the number of intervals when preparing histogram. Use these two ways to calculate the number of intervals when there are 225 observations.
Homework Answers
The two methods as general guidelines in determining the number of intervals:
· A. Use ten intervals as a rule of thumb.
· B. Calculate the square root of the number of data points and round to the nearest whole number.
In the case of our example, the
square root of 225 is 15 when rounded.
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