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
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