Standard Deviation Calculator

Standard deviation (σ) calculator with mean value & variance online.

Population and sampled standard deviation calculator

Enter data values delimited with commas (e.g: 3,2,9,4) or spaces (e.g: 3 2 9 4) and press the Calculate button.

Enter data values:
Population standard deviation:
Sample standard deviation:
Population variance:
Sample variance:
Mean:

Discrete random variable standard deviation calculator

Enter probability or weight and data number in each row:

Probability	Data number
Standard deviation: Variance: Mean:
Calculation:

Whole population standard deviation calculation

Population mean:

Population standard deviation:

Sampled data standard deviation calculation

Sample mean:

Sample standard deviation:

Discrete random variable standard deviation calculation

Random variable mean:

Discrete random variable standard deviation:

 

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See also

• Weighted average calculator
• Variance calculator
• GPA calculator