ASQ Six Sigma Green Belt 5

Question 1

Which of the following best defines 'takt time' in lean manufacturing?

Accepted Answer

The available production time divided by customer demand rate

Answer

Takt time is the pace of production needed to meet customer demand, calculated as available production time divided by the number of units demanded.

Question 2

When performing a regression analysis, what does the R-squared (R²) value tell you?

Accepted Answer

The proportion of variation in Y explained by the X variable(s)

Answer

R² measures the proportion of total variation in the response variable that is accounted for by the predictor variables in the regression model.

Question 3

A Green Belt is analyzing defect data across five product lines using a chi-square test. What type of null hypothesis is being tested?

Accepted Answer

The defect proportions are independent of (not associated with) product line

Answer

A chi-square test of independence tests whether there is a significant association between two categorical variables — in this case, product line and defect occurrence.

Question 4

What is the difference between 'precision' and 'accuracy' in a measurement system?

Accepted Answer

Precision refers to consistency of repeated measurements; accuracy refers to closeness to the true value

Answer

Precision (repeatability/reproducibility) describes how consistently a system measures the same item; accuracy describes how close measurements are to the true reference value.

Question 5

In a full factorial 2^3 DOE with factors A, B, and C, how many experimental runs are required (excluding replicates)?

Accepted Answer

8

Answer

A full factorial 2^3 design tests 3 factors each at 2 levels, requiring 2³ = 8 experimental runs to evaluate all factor combinations.

ASQ - American Society for Quality Certification Practice Test

ASQ - American Society for Quality Certification Practice Test

ASQ Six Sigma Green Belt 5