List of CalculatorsControl Limit For C Chart Control Limits for IMR Chart Control Limits for NP Chart Control Limits for P Chart Control Limit For U Chart Control Limits for Xbar-R chart Control Limits for Xbar-S chart Cost of Poor Quality Guide to Master Black Belt Competency Guide to select the right Hypothesis Test Little’s Law Net Present Value Overall Equipment Efficiency (OEE) Process capability calculator Process Cycle Efficiency R Square Adjusted Sample size calculator for mann whitney test Sample Size Calculator for 1 Proportion Test Sample Size Calculator For 2 Proportion Test Sample Size Calculator For 1 Proportion Test (Finite Population) Sample Size Calculator For 2 Proportion Test (Finite Population) Sample Size calculator For 1 Sample T Test Sample Size Calculator For 2 Sample T Test Sample Size Calculator For 1 Sample T Test (Finite Population) Sample Size Calculator For 2 Sample T Test (Finite Population) Sample Size Estimation (Mean) Sample Size Estimation(Proportion Data) Sigma Level Calculator (Continuous Data) Sigma Level Calculator (Discrete Data – Defects) Sigma Level Calculator (Discrete Data – Defectives) Takt Time Sample Size Calculator for Mann Whitney Test use this calculator to determine the number of samples required to compare two population median Confidence Levelthe minimum acceptable probability of preventing type I error90%95%99%99.9%Power of Testthe minimum acceptable probability of preventing type II error50%80%90%95%99%twofieldMedian 1Enter the first population or sample medianMedian 2Enter the second population or sample medianmedianPopulation Standard DeviationThis is the common standard deviation of the two populations and samples (also known as pooled standard deviation)population deviationSample Size for Mann Whitney TestMinimum samples required to check if the two medians are similar or not (this is an approximation)