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 Estimation (Proportion Data) Hint: Use this calculator to estimate the Sample Size for a given Margin of Error (Acceptable Difference) for defective data (proportion). E.g. You want to survey to know how many people use Google Email and your research shows 80% of the population use it. You are okay if your survey result is 80% ±10%. How many people will you survey to be 95% sure? Confidence LevelIn the above example, it is 95% 90%95%99%99.9%ProportionThis is same as the assumed or researched proportion. In the above example it is 80%. Just enter 80 Acceptable Difference %or Margin of Error. In above example it is 10%. Just enter 10 Estimated Sample Size Δ
