Population Variance Calculator for straightforward arithmetic and symbolic problem solving when you want a fixed formula answer without improvising the math by hand.
Informational calculator only. Verify important outputs independently before legal, tax, medical, engineering, safety-critical, contractual, employment, or compliance use.
Enter job values, review the estimate, then use the decision hints before ordering or quoting.
sigma^2 = sum((x - mean)^2) / nUse n in the denominator when the values represent the full population being measured.
This page uses four values for a fixed-size population example.
Keep more precision when the output will feed another formula, drawing, coordinate step, or comparison rather than being rounded once and left alone.