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Sample sizes are dependent upon the data type (discrete data requires more than continuous), the desired precision (+/- 2 minutes or =/- 2%, etc.) and the variation in the data (measured as standard deviation for continuous data and % defective for discrete). We’ll have a separate webinar to address sampling but I hope that helps in the meantime!

Elisabeth Swan

Elisabeth is a Managing Partner at, the co-author of The Problem-Solver’s Toolkit and co-host of the Just-in-Time Cafe. For over 25 years, she's helped leading organizations like Amazon, Charles Schwab and Starwood Hotels & Resorts build problem-solving muscles with Lean Six Sigma to achieve their goals.