Helps determine class intervals and frequencies for constructing a histogram (visual representation of frequency distribution).
Start with your values, or try a preset.
Enter Number of Data Points, Minimum Value in Data Set, Maximum Value in Data Set, and Number of Classes (Suggested: sqrt(n)) in the units shown.
Read Lower Bound of First Class, Range, Class Width, Rounded Class Width, and Upper Bound of First Class in the results panel. Results update as you change the inputs.
Choose a preset to load an example, then adjust the values for your situation.
See the inputs and their calculated results.
Number of Data Points: 25; Minimum Value in Data Set: 5; Maximum Value in Data Set: 55; Number of Classes (Suggested: sqrt(n)): 5
Lower Bound of First Class: 5; Range: 50; Class Width: 10; Rounded Class Width: 10; Upper Bound of First Class: 15
Number of Data Points: 75; Minimum Value in Data Set: 10; Maximum Value in Data Set: 110; Number of Classes (Suggested: sqrt(n)): 8
Lower Bound of First Class: 10; Range: 100; Class Width: 12.5; Rounded Class Width: 12.5; Upper Bound of First Class: 22.5
Number of Data Points: 150; Minimum Value in Data Set: 0; Maximum Value in Data Set: 100; Number of Classes (Suggested: sqrt(n)): 10
Lower Bound of First Class: 0; Range: 100; Class Width: 10; Rounded Class Width: 10; Upper Bound of First Class: 10
Use calculators for algebra, geometry, trigonometry, probability, statistics, averages, z-scores, tests, and graphing tasks.
Continue with another tool on a related topic.
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