Six Sigma Green Belt Practice Questions and Answers 100% correct.

This is a bizarre question. It never mentions that the financial savings should be reported at the annual level. However, that's a reasonable assumption to make. $7,500 * 12 months = $90, 000. A shoe manufacturing firm learned through a Lean Six Sigma project their boot soles could be made of a different material requiring two less steps in the process. Removal of these two steps yielded a monthly cost savings of $7,500. Therefore the reported financial savings for this LSS project were: A) $45,000 B) $75,000 C) $90,000 D) $120,000 B. Descriptive Statistics The statistics that summarize a population are referred to as (A) categorical statistics (B) descriptive statistics (C) probabilistic statistics (D) control statistics 00:02 01:14 C. Deviation, True As we calibrate our Measurement System to assure accurate data we frequently encounter Bias which is the __________________ of a measured value from the ________________ value. (Taken from Iassc sample Green Belt exam.) (A) Spread, Mean of the population (B) Deviation, hoped for (C) Deviation, true (D) Spread, idea C. The range of the process When calculating the Cp index, what does the standard deviation represent in the formula Cp = (USL - LSL) / 6σ? (A) The tolerance interval (B) The confidence interval for the result (C) The range of the process (D) The variance of the index A. Multi - Vari Chart In an "X" Sifting exercises a Belt will use a(n) _______________ to assist in isolating families of variation that may exist within a subgroup, between subgroups or vary over time. (A) Multi - Vari Chart (B) Pareto Chart (C) FMEA (D) Shewhart Analysis A. Alpha error When an inspection process rejects conforming product, what type of error is being made? (A) a (B) b (C) σ (D) H0 C. Level of Significance Which of the following terms is used to describe the risk of a type I error in a hypothesis test? (A) Power (B) Confidence level (C) Level of significance (D) Beta risk A. 0.05 Which of the following is a commonly accepted level for alpha risk? (A) 0.05 (B) 0.50 (C) 0.70 (D) 0.95 B. Linear A correlation analysis is used to provide a numeric value for which of the following types of relationships between two variables? A) Random B) Linear C) Curvilinear D) Causation C. Poka-yoke A company has installed a system that prevents orders with incorrect information from being forwarded to production scheduling. This is an example of which of the following lean tools? (Taken from ASQ sample Black Belt exam.) (A) Standard work (B) Kanban (C) Poka-yoke (D) Visual factory D. Preventing controllable defects Poka-yoke is best defined as: (A) improving machine efficiency (B) reducing field failures to virtually zero (C) capturing the voice of the customer (D) preventing controllable defects C. Using color coding as an error signal Which of the following is an example of mistakeproofing? (A) Using an X Bar - R chart to prevent errors (B) Using 100% inspection to detect and contain defects (C) Using color coding as an error signal (D) Having the team that created the errors repair them B. Response Plan As a Belt completes a LSS project she creates for the Process Owner a Control Plan. The ________________ portion of the Control Plan details the actions to be taken when the KPI's indicate they may be moving outside acceptable limits. A) Visual Factory B) Response Plan C) Readjustment Plan D) Variance Tracking B. The most problematic In businesses that apply the theory of constraints, which element of a process receives immediate attention? A) The most important B)The most problematic C) The most efficient D) The most complicated A. The most pleased and displease customers are overrepresented What is one major problem with obtaining information about customer satisfaction from comment cards? A) The most pleased and displeased customers are overrepresented B) Responses are often vague C) Participants must be compensated D)The expense is high D. Lognormal Which distribution is appropriate for a continuous set of data with a fixed lower boundary but no upper boundary? A) Johnson B) normal C) exponential D) Lognormal B. Reliability, reproducibility and repeatability What are the three most important characteristics of process metrics? A) Repeatability, responsibility, and reproducibility B) Reliability, reproducibility, and repeatability C) Rationality, reliability, and repeatability D) Reliability, responsibility, and rationality D. Philip B. Crosby Which pioneer of quality control wrote Quality Is Free? A) Armand V. Feigenbaum B) W. Edward Deming C) Joseph M. Juran D) Philip B. Crosby C. Accommodation Which of the following conflict-response strategies would be most appropriate when a group is fragile? A) Avoidance B) Competition C) Accommodation D) Collaboration C. Outputs Which is typically the first category to be identified in SIPOC analysis? A) Suppliers B) Inputs C) Outputs D) Processes D. Demand divided by the amount of time available How is takt time calculated? A) Time required for a task divided by demand B) Overall process time minus time required for a particular task C) Available time divided by demand D) Demand divided by the amount of time available A. 64. If there are four levels and three factors in a complete factorial design, 64 runs would be required. The number of required runs is calculated by raising the number of levels to a power equal to the number of factors. In this case, then, the calculation is performed 43 = 64. If the complete factorial design had five levels and three factors, the number of runs would be calculated 53 = 125. How many runs would be required in a complete factorial design if there are four levels and three factors? A) 64 B) 7 C) 12 D) 81 A. Kurtosis. Kurtosis is the parameter of a statistical distribution related to the sharpness of the peak. In a normal distribution, where the points resemble the standard bell curve, the kurtosis value is one. If the peak is sharper, the kurtosis value will be higher than one; if the peak is less severe; the kurtosis value will be less than one. Central tendency is the general trend of the data: in an asymmetrical distribution, the median is roughly equivalent to the central tendency, while in an asymmetrical distribution, the mean is a better marker. Skewness is basically the difference between the mean and the mode of a data set. The mode of the data set is the value that appears most often. Finally, the standard deviation of the data set is the average amount of variation from the mean. Which parameter of a statistical distribution relates to the sharpness of its peak? A) Kurtosis B) Central tendency C) Skewness D) Standard deviation A. Yield. Yield is the amount of completed product divided by the original amount of product. What is the name for the amount of completed product divided by the original amount of product? A) Yield B) Scrap rate C) Throughput yield D) Rolled throughput yield A. 10% or less. In gauge repeatability and reproducibility analysis, 10% or less total process variation is acceptable. Variation from 10 to 30% is considered problematic, and any variation over 30% is unacceptable. In gauge repeatability and reproducibility analysis, what percentage of total process variation is acceptable? A) 10% or less B) 15% or less C) 20% or less D) 30% or less A. Spaghetti diagram. A spaghetti diagram indicates the physical travel of employees, resources, and equipment during a process. These diagrams are used to identify unnecessary movements and to streamline processes as much as possible. A scatter diagram displays the correlation between two variables, with the independent variable on the x-axis and the dependent variable on the y-axis. An Ishikawa diagram, also known as a fishbone or cause-and-effect diagram, is used to outline the causes of a particular event, as well as the possible results of particular actions. Finally, a matrix diagram depicts the relationships between a group of different items in several groups. A matrix diagram looks a great deal like a table of data, with the strength between relationships indicated by the values in each cell. Which type of diagram is used to eliminate unnecessary movement during a process? A) Scatter diagram B) Spaghetti diagram C) Ishikawa diagram D) Matrix diagram