cCalmCalc
σ
MATH

Standard Deviation Calculator

Solve Standard Deviation with a transparent method.

How should the data be treated?Use sample when these values represent part of a larger group.
2 options
Dataset values8 of 100

Paste up to 100 values from a row, column, or spreadsheet.

STANDARD DEVIATION2.29128785

Population method; n = 8, mean = 4.5, variance = 5.25. Uses N for a population or N−1 for a sample, then reports count, sum, mean, variance, standard deviation, standard uncertainty, and a 95% uncertainty margin.

Count
8
Sum
36
Mean
4.5
Population variance
5.25
Population standard deviation
2.29128785
Standard error
0.81009259
95% margin of error
1.58778147
Estimate based on the values shown
Formula checkedUses N for a population or N−1 for a sample, then reports count, sum, mean, variance, standard deviation, standard uncertainty, and a 95% uncertainty margin.