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IASSC Lean Six Sigma – Black Belt Questions and Answers

Question 41

Which statement(s) are correct about the Regression shown here? (Note: There are 2 correct answers).

The dependent variable is the outside temperature

The relationship between outside temperature and number of customers per hour is a Linear Regression

The dashed lines indicate with 95% confidence where all of the process data should fall between

The dashed lines indicate with 95% confidence the estimate for the Quadratic Regression Line

The predicted number of customers per hour is close to 5 if the outside temperature is 10 deg C

Question 42

A(n) ______________ is best used to compare a Machine 1 average quality characteristic to the same quality characteristic of Machine 2.

1-Sample t-test

2-Sample t-test

F test

ANOVA test

Question 43

Use this data to calculate the Z Score. Average of: 92, Standard Deviation: 2, Upper Spec Limit: 101

0.75

1.5

2.25

4.50

Question 44

What aspects of Measurement Systems Analysis (MSA) studies are applicable when the process used to measure does not damage the part?

Destructive variable gage R&R and Crossed Study

Destructive variable gage R&R and Nested Study

Nondestructive variable gage R&R and Crossed Study

Nondestructive variable gage R&R and Nested Study