Question 1

When utilizing Statistics the population is defined as a collection of all the individual data points of interest.

Accepted Answer

This is correct. The population refers to the entire group of individuals or data points being studied in a statistical analysis.

Question 2

The ability to repeat the same measurement obtained with one measurement instrument used several times by one appraiser while measuring the identical characteristic on the same part is known as ____________.

Accepted Answer

Repeatability is the ability of a measurement instrument to produce consistent results when measuring the same characteristic on the same part multiple times by the same appraiser. Bias refers to the systematic error in measurement results, while linearity refers to the consistency of measurement results over the entire range of measurements. Reproducibility is the ability of a measurement instrument to produce consistent results when measuring the same characteristic on the same part by different appraisers or with different instruments.

Question 3

The Z score is a measure of the distance in Standard Deviations of a sample data point from the Median of the sample population.

Accepted Answer

The Z score is a measure of the distance in Standard Deviations of a sample data point from the Mean of the sample population, not the Median.

Question 4

Nominal Scale data consists of names, labels or categories and cannot be arranged in any mathematical ordering scheme. Complex arithmetic functions cannot be easily applied to Nominal Data:

Accepted Answer

Nominal Scale data is qualitative data that cannot be measured or ranked numerically. Therefore, arithmetic functions such as addition, subtraction, multiplication, and division cannot be applied to this type of data.

Question 5

If a Histogram displays two peaks the distribution would likely be _____________.

Accepted Answer

A histogram with two peaks indicates that the data has two modes or bimodal distribution. This means that there are two different values or ranges of values that occur with high frequency in the data set.

Question 6

The X-Y Diagram is a tool used to identify/collate potential X's and assess their relative impact on multiple Y's.

Accepted Answer

The X-Y Diagram is indeed a tool used for identifying and assessing potential factors (X's) and their impact on multiple outcomes (Y's).

Question 7

The difference between the largest observation and the smallest observation in the data set is known as the _______________.

Accepted Answer

The term used to describe the difference between the largest and smallest observation in a data set is the "range." Therefore, the correct answer is B. A, C, and D are not accurate terms to describe the difference between the largest and smallest observations.

Question 8

As a type of measurement error, Linearity describes a change in accuracy through the expected operating range of the measurement instrument.

Accepted Answer

Linearity refers to a change in accuracy through the expected operating range of a measurement instrument. Therefore, the statement is true.

Question 9

Which of these is Discrete data?

Accepted Answer

Discrete data refers to countable data that can only take on specific values. In this case, the number of people who went into the station is countable and cannot be a fraction or decimal. A, B, and D all involve continuous data which can take on any value within a certain range.

Question 10

The term FMEA is an abbreviation for Failures Measure Effective Automation.

Accepted Answer

FMEA stands for Failure Mode and Effects Analysis, not Failures Measure Effective Automation.

Question 11

Measurement System Analysis is a procedure used to quantify variation of the method or system used for taking measurements.

Accepted Answer

Measurement System Analysis is a process used to assess the variation of a measurement system or method in terms of repeatability, reproducibility, and accuracy. It is used to determine the reliability of a measurement system and identify any sources of error.

Question 12

The Empirical Rule is important because it provides an estimate of the probability of an event occurring depending on the Standard Deviation from the Mean.

Accepted Answer

The Empirical Rule or 68-95-99.7 rule provides a rough estimate of the probability of an event occurring based on the number of standard deviations away from the mean. It states that approximately 68% of data falls within one standard deviation, 95% within two standard deviations, and 99.7% within three standard deviations of the mean. Therefore, it can be used to estimate the probability of an event occurring based on its distance from the mean.

Question 13

A Belt gathered the following defect data for a shoe production line and wanted to assemble it into a Pareto Chart. The correct order from left to right in the chart would be: Data:     Cutting      38     Forming     17     Stitching    56     Sealing      42

Accepted Answer

The Pareto chart should be in descending order of the frequency of defects, from left to right. Based on the data given, the order would be: Stitching, Sealing, Cutting, Forming. Therefore, choice C is the correct order.

Question 14

Long-term Data represents all the variation that one can expect within the subject process.

Accepted Answer

Long-term data takes into account all variation that can occur in the subject process over a prolonged period, making it an accurate representation of the process's performance.

Question 15

Measurement error is defined as the effect of all sources of measurement variability that caused an observed or measured value to deviate from the __________.

Accepted Answer

The true value is the actual value that is being measured, and measurement error is caused by factors that cause the observed value to deviate from this true value. Therefore, the correct answer is D. Standard deviation, mean, and median are all measures of central tendency and variability within a sample, but they do not represent the true value being measured.

Question 16

The very best way to begin an effort to map a process is to do which of these?

Accepted Answer

The best way to begin mapping a process is to walk the actual process from beginning to end. This allows the mapper to see exactly what is happening in real time and identify each step, decision point, and potential waste or inefficiency. Interviewing the process owner or manager can be helpful, but they may not have a complete understanding of the process or may have biases that influence their perspective. Taking pictures of the factory floor can also be useful, but it cannot capture the entire process or identify every potential improvement opportunity.

Question 17

The purpose of a Process Map is to identify the complexity of the process and to assist in identifying critical steps in the process.

Accepted Answer

The purpose of a Process Map is to identify the complexity of the process and to assist in identifying critical steps in the process. It provides a visual representation of the steps involved in a process and helps in understanding how the different steps are interconnected. By identifying areas that are inefficient or prone to errors, a process map can help in improving the overall performance of the process.

Question 18

The Accuracy of a Measurement System addresses _________________.

Accepted Answer

The accuracy of a measurement system is determined by its stability, bias, and linearity. Repeatability and reproducibility are measures of precision, while sensitivity is a measure of how responsive a measurement system is to changes in the input. Therefore, the best choice is A, which includes the factors that determine the accuracy of a measurement system.

Question 19

The deviation of the measured value from the actual value is known as _____________.

Accepted Answer

Bias is the term used to describe the difference between the measured value and the true or actual value. Linearity refers to how well the measurement system follows a straight line, Repeatability is the ability of a measurement system to produce the same results when measuring the same sample multiple times, and Movement does not pertain to measurement accuracy.

Question 20

When looking at a distribution graph, the Mean is defined as the __________.

Accepted Answer

The mean is calculated by adding up all the data points and dividing by the total number of data points in the sample. Therefore, it is a measure of the average based on the sample size.

Exam 6: Six Sigma Green Belt