Exam 1 - Measurement Systems Analysis

Question 1

Preferably, the measurement system should have a standard deviation less that ___% of that in the process you are studying.

Answer 1

Preferably, the measurement system should have a standard deviation less that 10% of that in the process you are studying.

Question 2

A Gage R&R system is used to determine the _____ of a measurement system.

Answer 2

A Gage R&R system is used to determine the precision of a measurement system.

Question 3

The four steps to a Gage R&R study are:

Answer 3

1) plot the data
2) examine the components of variation sample-to-sample
3) Conduct ANOVA
4) Evaluate gage R&R error

Question 4

What is the definition of accuracy?

Answer 4

Accuracy - difference between the sample average and the true value

Question 5

What is the definition of precision?

Answer 5

Precision - variation in the same sample measured repeatedly with the same measurement system

Question 6

What is the definition of repeatability?

Answer 6

Repeatability - variation in measurement obtained by one analyst (within)

Question 7

What is the definition of reproducibility?

Answer 7

Reproducibility - variation in the average of measurements made by different analysts (between)