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Chapter 3 Statistical Models or Quality Control Improvement.

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Presentation on theme: "Chapter 3 Statistical Models or Quality Control Improvement."— Presentation transcript:

1 Chapter 3 Statistical Models or Quality Control Improvement

2 Easy to find percentiles of the data; see page 43 Stem-and-Leaf Display

3 Also called a run chart Marginal plot produced by MINITAB Plot of Data in Time Order

4 Group values of the variable into bins, then count the number of observations that fall into each bin Plot frequency (or relative frequency) versus the values of the variable Histograms – Useful for large data sets

5 Histogram for discrete data

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7 Numerical Summary of Data

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10 The Box Plot (or Box-and-Whisker Plot)

11 Comparative Box Plots

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16 The Hypergeometric Distribution

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18 Basis is in Bernoulli trials The random variable x is the number of successes out of n Bernoulli trials with constant probability of success p on each trial The Binomial Distribution

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22 Frequently used as a model for count data The Poisson Distribution

23 The Normal Distribution

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27 Original normal distribution Standard normal distribution

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