In the last knowledge sharing session, I share about 2k factorial DOE with Minitab. Somebody ask how actually Minitab define the red line in the Pareto Chart of Effect, and what is Lenth's PSE
Answer given to the audiance during the knowledge session was : sorry, I don't know.
Anyway, I try to find out the asnwer yesterday and here the answer I get.
I try to work out the number with the example I shared, fortunately, I manage to workout the answer manually.
Just follow the step below, I believe you guy can get the answer as well
Step 1 : Stat > DOE > Analyse Factorial Design
Check Storage & Effect as shown in the picture below
Copy the value of EFFE1 and paste it into Excel for manual calculation
Table as shown in the picture below. You should able to get Lenth's PSE of 11.4375
In Minitab, the Red Line of Pareto chart is named as Margin Error (ME).
ME = t x Lenth's PSE
Where t can be find from t distribution.
Cal > Probability Distribution > t
Refer to Ref Document above.
Finally, I got the answer.