Calculate mean, variance, and standard deviation from a numeric data set using population or sample assumptions.
The Standard Deviation Calculator calculates mean, variance, and standard deviation for a numeric data set.
Population variance divides squared deviations by N; sample variance divides by N - 1 when estimating from a sample.
Standard deviation describes spread but does not prove normality, remove outliers, or determine whether data collection is representative.
Solve common percentage problems, including finding a percentage of a value, the percentage one value is of another, and the change between values.
Calculate the mathematical average (mean), median, mode, and range of any dataset instantly.
Calculate the absolute and relative percentage increase from an initial value to a final value. Works for both positive increases and negative decreases.