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Six Sigma – Mock Quiz

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This test is for professionals aiming to get Six Sigma Green Belt Certified, but Black Belt’s can also attempt.

#1 Control Charts for attribute or discrete data have only 4 Tests designed to detect the out of control situations

#2 The risk priority number is the sum of severity, occurance and detect-ability

#3 If there are N opportunities per unit, DPU = N x DPO

#4 Problem Statement must articulate the root causes of the problem

#5 For all distribution types, 50% of data <= Median and 50% of data >= Median

#6 Box Plots are used when Y is continuous and X is discrete

#7 All types of performance data will form a straight line on normal probiality paper.

#8 Range, Interquartile Range (Q3 – Q1), and Standard Deviation, etc. are the measures of Central Tendency of a distribution

#9 An independent variable is often designated as “X” and is often associated with the word “problem”.

#10 Scatter Plots can be used to visualize the impact of Continuous X factor on Continuous Y, for e.g., Time taken to download Vs. Network Speed

#11 A process that meets the specification limits is always in control

#12 A process that is not capable could be in a state of statistical control

#13 The use of signs, labels, colors, and coding are the key elements of the visual factory

#14 Beta risk is the probability of falsely accepting the null hypothesis.

#15 When the slope of the Regression line in a Scatter plot is nearly zero, that is, the regression line is nearly horizontal, then we can conclude there is no correlation between X and Y

#16 The denominator term of the DPMO metric must be maximized if quality is to be improved.

#17 SMED is an acronym that means: ‘single minute elimination of defects”

#18 We need only Y data to be able to compute Process Sigma Level

#19 Processes that are in a state of statistical control will always have a low defect rate

#20 Moving Range or MR chart cannot have an LCL that is less than 0

#21 CTQs measured using continuous data need not have a Performance Standard

#22 AS IS statement is a mathematical reflection of the Problem Statement

#23 If the Sigma Level of a process increases to the double the original value, then the defects will reduce to half of the original defects

#24 FMEA can be used to prioritize the known risks in the Processes

#25 The mode is a computed value that divides a set of data in half, regardless of the distribution shape or type.



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