Analysis - Statistics
24 important questions on Analysis - Statistics
Why do we use statistics in the Analysis phase?
What is an Confidence interval?
Translate to six sigma speak:
How confident do you want to be in your decision?
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Translate to six sigma speak:
Select and run the test
Translate to six sigma speak:
Decide if your theory was right or not
How does the Alternative Hypothesis always start?
Hypothesis test for averages - routemap
Are the samples normally distributed? What do you do when you are not sure?
Which test for one sample?
Does the data need to be normally distributed for a T test?
Do the two samples have to be the same size?
What do we do when P value is lower than 0.05?
When do you use a Paired T test?
How does the 1 sample Sign test work?
How does the Moods Median Test work?
What is Chi Square similar to?
With one process output, what do you use to graph the data?
With many process inputs, what do you use to check correlations?
What do you use for Simple Line Regression?
Pearson Coefficient: Interpreting P values with 95% confidence level
What happens when the P value is higher than 0.05?
What is Linear Regression?
What is Quadratic regression?
What is Cubic regression?
What are the main differences between Regression and DOE?
Designed experiments are used to create and analyse real time data that is taken from the process in "experimental mode"
In DOE, what does Full design mean?
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