Block 3 - lecture 4

Question 1

what to do when good quality is achieved?

Answer 1

• reduce inspection for just monitoring

- move on

Question 2

s chart?

Answer 2

sample standard deviation for each subgroup

Question 3

advantages of an s chart?

Answer 3

• uses all values, not just extremes

- good for larger subgroups, where range would be skewed by extreme values

Question 4

disadvantages of an s chart?

Answer 4

takes ages