Need to find something out about multiple processes?

  • Do these machines operate at the same variation?
  • Is the variation in the results from these machines the same for all machines?
  • Do my four different shifts produce the same amount of material?
  • Does one shift have more variation than another shift?


Watch a Video Highlighting the Comparing Multiple Process Techniques in SPC for Excel


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Comparing Multiple Processes and SPC for Excel

SPC for Excel contains five techniques for comparing means/averages between multiple processes:

  • Fisher’s LSD Method for Means
  • Tukey’s Method for Means
  • Bonferroni’s Method for Means
  • Analysis of Means
  • Box and Whisker Plots

In addition, there are two techniques for comparing the variation between multiple processes:

  • Bartlett’s Test for Equality of Variances
  • Modified Levene’s Test for Equality of Variances


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