x-bar (x̄), i.e., “standard error,” of a distribution is calculated by taking the population standard deviation and dividing it by the square root of 5 times n (where n is sample size).

x-bar (x̄), i.e., “standard error,” of a distribution is calculated by taking the population standard deviation and dividing it by the square root of 5 times n (where n is sample size).

Standard Error: (σ_{x̄}) = s/\sqrt{5n}(σxˉ​)=s/5n​