Required Sample Size Calculator

Online probability and statistics calculator that allows you to determine required sample size needed for acceptable accuracy or risk.

Required Sample Size Calculation

Inflation Factor (K) =
Number of Predictors =
 
 
Required sample size=

Online probability and statistics calculator that allows you to determine required sample size needed for acceptable accuracy or risk.

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Formula n = (2K2-1)/(K2-1) + pK2 / (K2-1) Where, n - Required sample size, k - Inflation factor, p - Number of predictors,

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