Statistics Examples

Create a Grouped Frequency Distribution Table
, , , , , ,
Step 1
Find the data range by subtracting the minimum data value from the maximum data value. In this case, the data range is .
Step 2
Find the class width by dividing the data range by the desired number of groups. In this case, .
Step 3
Round up to the nearest whole number. This will be the size of each group.
Step 4
Start with and create groups of size .
Step 5
Determine the class boundaries by subtracting from the lower class limit and by adding to the upper class limit.
Step 6
Draw a tally mark next to each class for each value that is contained within that class.
Step 7
Count the tally marks to determine the frequency of each class.
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