Six Sigma
Essay by Vaibhav Jain • January 31, 2018 • Presentation or Speech • 366 Words (2 Pages) • 451 Views
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Graph 1 : Components of Variation : This graph indicates the components of variation in the measurement of the 10 parts by 3 operators and 3 trials for each operator. When we consider the gage R&R variation , the variation due to study is more than the variation due to the actual part lengths. More variation is due to part to part and percentage of study variance is around 25%.
Graph 2 : Values by Parts : This graph indicates the various measured values based on the part that we want to analyze. This can be used to analyze the precision and accuracy of measurement
Graph 3 : R chart by operators : This Indicates that the measured values are within the range the Upper and Lower Control limit and it also shows the amount of variation by an operator based on the part number that he is measuring. None of the points are beyond the control limits hence the operator is consistently measuring the parts.
Graph 4: Values by operator : It shows a box plot of the measured values and it can be used to find out Outliers if any
Graph 5 : X bar chart : Many points are above or below the control limits which indicate part to part variation are much greater than measuring devise variation
Graph 6: Lines are virtually identical so operators are measuring the parts identically and similarly.
Gage Run Chart of Values
Gage Run Chart of Values
Gage R&R Study  ANOVA Method
TwoWay ANOVA Table With Interaction
Source  DF  SS  MS  F  P 
Parts  9  6185.79  687.310  173.487  0.000 
Operators  2  6.47  3.233  0.816  0.458 
Parts * Operators  18  71.31  3.962  1.356  0.188 
Repeatability  60  175.33  2.922 


Total  89  6438.90 



α to remove interaction term = 0.05
TwoWay ANOVA Table Without Interaction
Source  DF  SS  MS  F  P 
Parts  9  6185.79  687.310  217.358  0.000 
Operators  2  6.47  3.233  1.023  0.364 
Repeatability  78  246.64  3.162 


Total  89  6438.90 



Gage R&R
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