Appendix A.7

Grouped Data Standard Deviation Calculator

Calculate the standard deviation from a frequency distribution table.

InteractiveGrouped Data Standard Deviation Calculator

Population Standard Deviation

Sample Standard Deviation

LowerUpperActions
14.5-11.20125.44627.20
24.5-1.201.4417.28
34.58.8077.44619.52
Totalsn = 251264.0000
25
25.7000
1264.0000
Formula Used
50.5600
7.1106

Calculation:

Formula Used
52.6667
7.2572

Calculation:

Note: