# Statistics

## Sample size calculator to estimate proportion

Sample size required to estimate proportion The formula to estimate the sample size required to estimate the proportion is ...

## Sample size calculator to test hypothesis about mean

Sample size to test hypothesis about mean In inferential statistics, knowing how many samples to take from the population is...

## Sample size calculator to estimate mean

Sample size to estimate mean In inferential statistics, knowing how many samples to take from the population is extremely important....

## Moment coefficient of kurtosis calculator for grouped data

Moment coefficient of kurtosis for grouped data Let $(x_i,f_i), i=1,2, \cdots , n$ be given frequency distribution. The mean of...

## Moment coefficient of skewness Calculator for grouped data

Moment coefficient of skewness for grouped data Skewness is a measure of symmetry, or more precisely, the lack of symmetry....

## Bowley’s Coefficient of Skewness Calculator for Ungrouped data

Bowley's Coefficient of Skewness for Ungrouped data Skewness is a measure of symmetry. The meaning of skewness is "lack of...