LSSGB Test 1 Questions with Certified Answers

LSSGB Test 1 Questions with Certified Answers Increasing the performance in a Six Sigma organization from 3 sigma to 4 sigma would reduce the defects per million opportunities by a factor of... 10 (rounded). The 4 sigma defect rate is 6210 ppm and the 3 sigma defect rate is 66807 ppm or a ratio of 1:10.76. What is the inference of "Process is in control" according to Walter Shewhart? Process has chance causes - The only time the process is said to be in control is when the common causes of variation contribute to the variability of the process. Option c is the correct answer. One of the uses of recording check sheets is: Collecting tally counts of attribute data If P(A) is 0.6, P(B) is 0.5, Probability of either event happening together is 0.85, what is the probability of both the events occurring? P(A) + P(B)- P(A&B) = 0.6+0.5-0.85 = 0.25. A team project charter is essential for all of the following reasons, EXCEPT: a. It ensures the team champion will be supportive b. It guides the team to focus on the appropriate problem c. It leads to a solution that aligns with the organization's goals d. It provides a complete history of the project The project charter will be the initial starting point of a project and does not provide its total history. The advantage of using the modern designed method of experimentation, rather than the classical OFAT is that: Fewer terms and measurements are needed for valid and useful information. The key to this question is the meaning of the word "classical." To most authors, this term refers to varying one factor at a time while holding all other factors constant. Although this approach may work for very simple problems, it causes havoc with moderately complex systems. The fixed factors do vary, which can waste time, effort, and money. This traditional approach can yield invalid or inconclusive results. Modern design experimentation (including fractional factorials, improved three factor designs, and Latin square logic) squeeze a large amount of valid information from a few trials. Which tool would be appropriate to collect the data to study the symptoms of a problem? Check sheet - This ensures that all the required data has been identified and validated. The probability of a train arriving on time and leaving on time is 0.8. The probability of the same train arriving on time is 0.84. The probability of this train leaving on time is 0.86. Given the train arrived on time, what is the probability it will leave on time? The solution to this problem involves conditional probability. The probability of event B occurring, given event A has occurred, is: Let event B be the probability the train leaves on time; let event A be the probability of the train arriving on time. The intersection of events A and B is the probability of the train arriving and leaving on time. Thus, the probability of event B given event A has occurred is 0.8/0.84 = 0.9524. Whare the advantages/disadvantages of control charts? (disadvantage) The disadvantage is that they can be difficult to interpret properly (Advantages) The advantages of control charts include their ability to detect trends of statistical significance, provide an ongoing measure of process capability, and detect special causes of variation In Six Sigma applications, Standard Deviation is referred to as difference from the: Standard deviation is always referred to as difference from the mean.