Statistical Sample Size

Training Topics:

INTRODUCTION

Statistical Distributions Review

• Hypergeometric
• Binomial and Negative Binomial
• Poisson
• Normal
• Weibull
• Cpk and Ppk Capability Analysis
• Basic Requirements in Sample Size Determination
• OQ and PQ Considerations for Sample Size Determination 
• Define Risk Assessment / Importance Level

SAMPLE SIZE FOR ATTRIBUTE DATA TYPE

• Sample Size to Binomial c = 0, % of Confidence and % of Conformance
• Sample Size to Estimate a Binomial Proportion
• Sample Size to Estimate a Poisson Occurrence Rate

SAMPLE SIZE FOR VARIABLE DATA TYPE

Sample Size for a Confidence Interval

• Population Average (Normal Distribution)
  • When σ is assumed to be known
  • When σ is assumed to be Unknown
• Population Average (Weibull Distribution)
  • When α and β values are used to approximate the Normal Distribution
• Reliability Demonstration
  • Three parameter Weibull Distribution
  • Two-parameter Weibull Distribution
  • Standard Weibull Distribution
  • Mean of two Parameters
  • Variance of two parameters
• Sample Size for Tolerance Intervals
• Sample Size to perform Process Capabilities