Author Question: In the randomized block design ANOVA, the sum of squares for error equals: a. SS(Total) - SST b. ... (Read 100 times)

Pea0909berry · **on:** Jun 24, 2018

In the randomized block design ANOVA, the sum of squares for error equals:
a. SS(Total) - SST
b. SS(Total) - SSB
c. SS(Total) - SST - SSB
d. None of these choices.

Question 2

Assume a process has limits set at 3 standard errors from the centerline. The average run length (ARL) is 385 . What does this mean?

frankwu0507 · **Reply #1 on:** Jun 24, 2018

Answer to Question 1

C

Answer to Question 2

When the process is under control, the x chart will erroneously conclude that it is out of control once every 385 samples on average. If the sampling plan, for example, calls for samples to be taken every hour, on average there will be a false alarm once every 385 hours.