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Advanced Roll SPC Seminar

1. Review of Basic Statistical Concepts

· Means and Variances and Sampling Distributions
· Normal Distribution and Probability Plots

 

2. Comparing Distributions Among Process Streams

· Empirical Density Functions
· Multiple Box Plots
· Analysis of Means and Analysis of Variance

 

3. X-Bar Charts

· Defining and Controlling Risks - Operating Characteristic

  Curves & Average Run Length
· Cumulative Sum Charts
· Exponential Weighted Moving Average Charts

 

4. Autocorrelation Analyses

· Covariances and Correlation Coefficients
· Autocorrelation

         Autocorrelation Scatter Plots
         Autocorrelation and Partial Autocorrelation Function

         Plots

5. X-Bar Charts and Autocorrelation Analysis

· Effects of Autocorrelation on X-Bar Charts - High Levels of False 

  Out-Of-Control Signals
· Adjustment and Correction of Control Limits - Getting the Risks

  where you want them.

6. Uncovering Cyclical Effects - Spectral Analysis

 

7. Controlling Multiple Quality Variables

· Multivariate Control Charts - Chi-Square and T-Square

  Charts

 

8. Application of Analysis of Means to Uncover Assignable Causes