Find the population mean: ( mu = frac{sum X}{N} )
Subtract the mean from each population value: ( X – mu )
Square each difference: ( (X – mu)^2 )
Add all squared differences: ( sum (X – mu)^2 )
Divide by the total number of population values: ( sigma^2 = frac{sum (X – mu)^2}{N} )
Use ( N ) for population size, not ( n-1 )
Final result is the population variance: ( sigma^2 )