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.
Discrete random variable standard deviation calculator
Enter probability or weight and data number in each row:
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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