Statistics Formulas & Calculators
Understand statistics formulas with explanations, examples and interactive tools.
Statistics
Median (Odd n)
\(x_{(n+1)/2}\)
Central ordered observation for odd sample size.
Open calculator →StatisticsMode
\(\text{mode}=\text{most frequent value}\)
Most frequent value(s) in data set.
Open calculator →StatisticsPopulation Variance
\(\sigma^2=\frac{\sum(x_i-\mu)^2}{N}\)
Population mean squared deviation.
Open calculator →StatisticsPopulation Standard Deviation
\(\sigma=\sqrt{\frac{\sum(x_i-\mu)^2}{N}}\)
Square root of population variance.
Open calculator →No matching formulas.