Page 363 - Six Sigma Demystified

Part 3 S i x S i g m a To o l S 343

Two-Way aNOVa Table without interaction
Source df SS MS F p
Item 2 0.0061000 0.0030500 33.4174 0.000
Operator 1 0.0002722 0.0002722 2.9826 0.106
Repeatability 14 0.0012778 0.0000913
Total 17 0.0076500

gauge R&R
Source VarComp %Contribution (of VarComp)
Total gauge R&R 0.0001114 18.42
Repeatability 0.0000913 15.10
Reproducibility 0.0000201 3.33
Operator 0.0000201 3.33
Part-to-part 0.0004931 81.58
Total Variation 0.0006045 100.00

Source SD Study Var (6 × SD) %Study Var (%SV)
Total gauge R&R 0.0105535 0.063321 42.92
Repeatability 0.0095535 0.057321 38.86
Reproducibility 0.0044840 0.026904 18.24
Operator 0.0044840 0.026904 18.24
Part-to-part 0.0222063 0.133238 90.32
Total Variation 0.0245865 0.147519 100.00

Number of distinct categories = 2.

Excel

Using Green Belt XL Add-On
Data input: Enter columns for part/item designator, appraiser name, and mea-
sured value or enter column for part/item designator and separate columns for
each appraiser containing his or her measured values.
Menu: New Chart\ Repeatability Chart.
Data range: Select orientation, number of trials, and number of appraisers based
on data input. Select ANOVA Method option in the Analysis tab of step 3.