Six Sigma Green Belt

While reviewing an X-bar control chart, you notice a set of seven consecutively decreasing points. You check previous control charts and notice that this is not a regular occurrence. What could have caused this behavior?

A Six Sigma project has reduced the variability in a process. What should be done to facilitate further reductions in variability?

A process is examined and four different types of errors are observed. These errors are classified such that a class I error is more critical than a class IV error. The errors and the number of times they were observed are presented in the following Error Classes - Observed Errors table.

Which measurement scale was used in this scenario?

Which inference test would you use to test if the variances of two samples are equal?

Refer to the exhibit.

Which value stream mapping icon in the exhibit represents a supplier in the manufacturing process?

Which data analysis tool would you use to prioritize the order in which problems should be addressed?

When evaluating the cost of poor quality (COPQ), what is an example of an internal failure cost?

You have created a Supplier, Input, Process, Output, Customer (SIPOC) diagram for your business system. You notice that the output of your process has changed but there has been no change in the suppliers, inputs, or the process. What information can be derived from this scenario?

Which formula represents the P/T ratio?

Which metric is an appropriate measure of a profit performance goal?

What is known as "a distribution based on counted data"?

Which option represents the main characteristic indicating a significant interaction on an interaction plot?

What are process level metrics?

You are performing a Six Sigma study for a leading manufacturer of acrylic glass sheets. During the study, you record the thickness of the glass in three places: the top, the middle, and the bottom. Over a full day, you have noticed that the thickness at the top is always 0.1 mm less than the middle, regardless of the machine being used to form the acrylic glass sheet. This accounts for the only variation in the end product. Which type of variation is indicted by the results?

Where in the house of quality would you find a list of customer needs and desires?

What is an advantage of manual project management methods versus automatic project management methods?

Which lean tool ensures that the condition and state of manufacturing processes are clear and readily accessible?

Data about the current process is collected in which step of the Define, Measure, Analyze, Improve, Control (DMAIC) process?

Which tool is used as a form of quality control and is deployed during process baseline estimation to monitor the variables and parameters occurring within a particular process?

Which of the following is used by a process owner to help track the performance of KIVs and KOVs?

Which method of quantifying measurement errors is the most accurate?

Which option represents the definition of a statistic?

Which option represents an input for the process to create study materials?

Which statement is an example of a goal statement?

Which project documentation tool graphically displays the start date, end date, and duration of project activities?

What is the mechanism by which the capability of a process is identified?

Five objects are sampled from a production line and measured for length. The measurements appear in the following Product Samples table.

What is the standard deviation of these lengths?

A team is given most of its power by which entity?

Where in the house of quality would you find a list of benchmarks or target values?

The idea that complex problems often have simple solutions describes the foundation of which technique used in the Theory of Constraints (TOC) environment?

Which lean concept describes an improvement initiative in a specific area, by a number of individuals from different groups, over a short period of time?

What is an advantage to using focus groups to gather customer feedback?

Which tool can be used to break down a problem into manageable pieces?

Which lean concept is also known as the heartbeat of the lean organization?

An activity that adds no value for the customer to a process or product describes which lean concept?

The temperature fluctuates in the environment where your production process creates widgets. The temperature is cool in the morning hours of the day and slowly shifts to hot during the afternoon hours. The process is somewhat sensitive to temperature. How would you expect this to present itself on an average control chart for your process?

When performing a one-way ANOVA, how is the treatment sum of squares calculated?

A bag contains 20 blue poker chips, 35 green poker chips, and 24 red poker chips. What is the probability of pulling out a blue chip, followed by a green chip, followed by a red chip?

Which design methodology would you use when considering a Six Sigma improvement project for an existing process?

Which option only appears in a project's milestone report?

Using the student t test, how do you determine if the test is a two-tailed test?

Which type of team is best suited for handling issues related to an organization's policies, practices, and operations?

Which statement describes TPM?

Which action is taken in the Control step of the Define, Measure, Analyze, Improve, Control (DMAIC) process?

Which type of control chart is appropriate for attribute data?

Which statement correctly defines a difference between Kaizen and Kaizen blitz?

Which model describes the factors that make up value in the eyes of the customer?

Review the Capability Index Failure Rates table for a list of the parts per million of nonconformance for various Cp values.

A process has a capability index rating (Cp) of 1.30. What percentage of product from this process is expected to be nonconforming?

An experiment is designed to test the effect of weight on the elasticity of a certain material. In the experiment, weights of various sizes were used. They include 2 grams, 6 grams, 14 grams, and 20 grams. What do these various sizes represent?

Review the Process Yield Data table, which shows the yields at each step of a six-step manufacturing process.

What is the total defects per unit (TDPU)?

Using the critical path method (CPM), how can you determine if an activity is on the critical path?

Which of the following statements is true concerning benchmarking?

Which process methodology should be used when statistical techniques such as regression analysis, design of experiments, and hypothesis testing are employed?

In creating a customer satisfaction survey, you want to measure the strength of the respondent's opinion while limiting the number of answer choices available to them. Which question format would be most appropriate?

What is known as "all activities involved in bringing a product from the raw material state to a finished product"?

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