Statistics Examples

, , , , , , , ,
Step 1
The class width can be found by finding the difference of the maximum data value and the minimum data value (range of data) divided by the number of classes.
Step 2
The number of classes can be estimated using the rounded output of Sturges' rule, , where is the number of classes and is the number of items in the data set.
Step 3
Select classes for this example.
Step 4
Find the data range by subtracting the minimum data value from the maximum data value. In this case, the data range is .
Step 5
Find the class width by dividing the data range by the desired number of groups. In this case, .
Step 6
Round up to the nearest whole number. This will be the size of each group.
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