GAQM CLSSGB-001 問題練習

Question No : 1
The Alpha level of a test (level of significance) represents the yardstick against which P-values are measured and the Null Hypothesis is rejected if the P-value is which of these?

• A.Less than the Alpha level.
• B.Greater than the Alpha level.
• C.Greater than the Beta and Alpha level.
• D.Less than one minus Alpha.
• E.Less than the power of one minus Beta.

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Question No : 2
Having an Alpha of .05 and a Beta of .10 are the most common risk levels when running a Statistical test.

• A.True
• B.False

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Question No : 3
Inferential Statistics is largely about Significance. There are both Practical and _______________ Significance to consider during an analysis of data in a Lean Six Sigma project.

• A.Problematic
• B.Impractical
• C.Usable
• D.Statistical

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Question No : 4
It is a Type I error if we reject the Null Hypothesis when it is actually true.

• A.True
• B.False

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Question No : 5
Hypothesis Tests determine the probabilities of differences between observed data and the hypothesis being solely due to chance. This is determined based on the result of the ______________.

• A.Random acts
• B.P-values
• C.Standard Deviations
• D.R-values

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Question No : 6
Hypothesis Testing can help avoid high costs of experimental efforts by using existing data.

• A.True
• B.False

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Question No : 7
The Central Limit Theorem helps us understand the ___________ we are taking and is the basis for
using sampling to estimate population parameters.

• A.Analysis
• B.Kurtosis
• C.Risk
• D.Route

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Question No : 8
Bias in Sampling is an error due to lack of independence among random samples or due to systematic sampling procedures.

• A.True
• B.False

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Question No : 9
The perfect sample size is the minimum number of data points required to provide exactly 6% overlap or risk if one wants a 95% confidence level.

• A.True
• B.False

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Question No : 10
To draw inferences about a sample population being studied by modeling patterns of data in a way that accounts for randomness and uncertainty in the observations is known as ____________________.

• A.Influential Analysis
• B.Inferential Statistics
• C.Physical Modeling
• D.Sequential Inference

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Question No : 11
When two Inputs have an impact on the Output together yet seem to have no or little impact on their own this is called a/an ________________.

• A.Interaction
• B.Oddity
• C.Coincidence
• D.Impossibility

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Question No : 12
Skewed, or Mixed, Distributions occur when data comes from several sources that are supposed to be the same yet are not.

• A.True
• B.False

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Question No : 13
A primary benefit of using a Multi-Vari Chart is it provides a visual presentation of two-way interactions.

• A.True
• B.False

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Question No : 14
A Six Sigma tool that helps to screen factors by using graphical techniques to logically subgroup multiple discrete X's plotted against a continuous Y is known as a ________________________Chart.

• A.SIPOC
• B.Multi-Vari
• C.Box Plot
• D.Whisker

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Question No : 15
For the data shown here a Belt suspects the three grades are supplying the same results.
Which statement(s) are true for proper Hypothesis Testing?

• A.The most appropriate Central Tendency to test is the Means
• B.An appropriate test to test Central Tendency is the Levene’s test
• C.An appropriate test to test Central Tendency is the ANOVA test
• D.An appropriate test to test Central Tendency is the Mood’s Median test

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