Dazed and confused for so long, it's now OK!
Saginaw Michigan?
I live for Shotts bread. My aunt and uncle are in saginaw of Shattuck. anyways;
I ran my study as you indicated, (kind of, 5 parts,2 trials, 3 ATe's) i'll do more once I know I'm on the right track) and want to make sure I understand what I just did.
part
number N Lower StDev Upper
1 6 0.0066168 0.0121106 0.0422025
2 6 0.0075311 0.0137840 0.0480341
3 6 0.0048868 0.0089443 0.0311686
4 6 0.0080423 0.0147196 0.0512942
5 6 0.0053718 0.0098319 0.0342619
Bartlett's Test (normal distribution)
Test statistic = 1.63, p-value = 0.804
Levene's Test (any continuous distribution)
Test statistic = 0.80, p-value = 0.535
Test for Equal Variances: data versus part number
Gage R&R Study - Nested ANOVA
Gage R&R (Nested) for data
Source DF SS MS F P
trial 1 0.0001633 0.0001633 0.33447 0.579
part number (trial) 8 0.0039067 0.0004883 2.98980 0.022
Repeatability 20 0.0032667 0.0001633
Total 29 0.0073367
Gage R&R
%Contribution
Source VarComp (of VarComp)
Total Gage R&R 0.0001633 60.12
Repeatability 0.0001633 60.12
Reproducibility 0.0000000 0.00
Part-To-Part 0.0001083 39.88
Total Variation 0.0002717 100.00
Study*Var %Study*Var
Source StdDev (SD) (6***SD) (%SV)
Total Gage R&R 0.0127802 0.0766812 77.54
Repeatability 0.0127802 0.0766812 77.54
Reproducibility 0.0000000 0.0000000 0.00
Part-To-Part 0.0104083 0.0624500 63.15
Total Variation 0.0164823 0.0988939 100.00
Well it looks like my repeatability sucks. Which is what I suspected. these ATE's are as older than my in-laws. If you move them your readings go to
in a hand basket.
I knew I wouldn't have any repro, my part-to-part is a source of interest. These are nearly 'identical 'parts. So where's this variance coming from?