## Variance and Standard Deviation Calculator For Ungrouped Data

Variance and Standard deviation for ungrouped data Variance and standard deviation are the measures of dispersion. Sample Variance Let $x_i, i=1,2, \cdots , n$ be …

Variance and Standard Deviation for Grouped Data Variance and standard deviation are the measures of dispersion. Let $(x_i,f_i), i=1,2, \cdots , n$ be the observed …