GRR实例大家来讨论，并请高手指点

小弟弟学习GRR，做的实例但不是很理想，希望高手能够指点哪里做错了，结果如下（图表形式见附页）：
FLUCK187:85650280 输出电压SPEC：10.735—11.865V Tolerance =1.13
经过计算结果如下：
Gage R&R Study - ANOVA Method
NOTE No or identical values for Operator - will analyze data without
operator factor.
One-Way ANOVA Table
Source DF SS MS F P
group 2 0.00566 0.0028300 2.02303 0.152
Repeatability 27 0.03777 0.0013989
Total 29 0.04343
Alpha to remove interaction term = 0.25
Gage R&R
%Contribution
Source VarComp (of VarComp)
Total Gage R&R 0.0013989 90.72
Repeatability 0.0013989 90.72
Part-To-Part 0.0001431 9.28
Total Variation 0.0015420 100.00
Process tolerance = 1.13
Study Var %Study Var %Tolerance
Source StdDev (SD) (6 * SD) (%SV) (SV/Toler)
Total Gage R&R 0.0374017 0.224410 95.25 19.86
Repeatability 0.0374017 0.224410 95.25 19.86
Part-To-Part 0.0119629 0.071777 30.46 6.35
Total Variation 0.0392683 0.235610 100.00 20.85
Number of Distinct Categories = 1
Gage R&R for data