Category: LSSBB/ Lean Six Sigma Black Belt

OPTIONS Scatter Plot Moving Average Histogram Control Chart ANSWER Moving Average EXPLANATION The question describes an application for the moving average chart. With the moving average chart, the data is smoothened so that true trends can be analyzed.

OPTIONS The width of the limits is usually set at plus or minus 3 standard deviations of the process. If the process is in control, 2700 points per million will fall outside the control limits. If the process is in control, half the points will...

Sometimes on a Control Chart, you may get two consecutive samples outside the target area but inside the specification. What is the expectation that two consecutive samples would both fall between the target area and the specification limit on the high side? OPTIONS 1/71 /49...

OPTIONS X-Bar chart np chart u chart c chart ANSWER u chart EXPLANATION The u chart is used to monitor the number of non-conformities per unit. This is also considered the average number of defects/unit.

OPTIONS muda Special Cause 5S Toyota production system ANSWER muda EXPLANATION While Toyota Production System uses Lean, these are categorized as waste or muda. So muda is more appropriate answer.

OPTIONS Any type of defects data Variable data on defects The number of defects in a sample Either the fraction or percent defective in order of time ANSWER Either the fraction or percent defective in order of time EXPLANATION The p chart does not plot...

OPTIONS 5 Sigma Self-Discipline Sorting Systems management ANSWER Sorting EXPLANATION The 5S includes Sort.

OPTIONS Y = 95 Y < 95 Y > 95 Y <> 95 ANSWER Y = 95 EXPLANATION A statistical hypothesis test determines if there is enough evidence to reject the null hypothesis at a given significance level. The null hypothesis must contain an equal...

OPTIONS To model discrete data when the population size is small compared to the sample size To make decisions and construct confidence intervals by summing the square of normal random variables To test for equality of variances from two normal populations To compensate for error...

It has been observed that the number of defects in the finish of a surface has an overage of 0.45. What is the probability of a randomly selected item having more than 1 defect in the surface finish? OPTIONS 0.45 0.2869 0.05 0.0755 ANSWER 0.0755...