# Sample Size for Estimate of Mean

Calculator

### Sample Size for Estimate of Mean Formula

n =(z

^{2}σ

^{2})/E

^{2}

Where,

z = Confidence level

σ = Standard deviation

E = Margin of error of the confidence interval estimate of μ

Calculator

(z

Where,

z = Confidence level

σ = Standard deviation

E = Margin of error of the confidence interval estimate of μ