Data Collection Plan Homework

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Chapter12_ASQv2.ppt

DS-624 Quality Management

Chapter 12

C. Statistical Distributions

DS-624 Quality Management

Agenda

What are the key characteristics of a Normal Distribution?

Normal Distributions

What are the key characteristics of a Normal Distribution?

  • The normal distribution is the one most frequently used by various professionals
  • Several statistical analysis make an assumption that the data are following a normal distribution.

  • According to the central limit theorem, the averages of measurements of individual data follow a normal distribution even if the individual data are from a difference distribution.
  • Since the distribution is in the shape of a bell, it is often referred to as a bell curve.