3. NOV-23-2000Page*ATwo-Sample T-Test and CI: K52, C**
Two-sample T for K52 vs C**
N Mean StDev SE Mean
C** 20 4.5322 0.0102 0.0023
K52 20 4.45191 0.00945 0.0021
Difference = mu K52-2 - mu K52-3
Estimate for difference: 0.08027
95% CI for difference: (0.07396, 0.08658)
T-Test of difference = 0 (vs not =): T-Value = 25.77 P-Value = 0.000 DF = 37 假设:H0:K52 = C**(精熙Mould)
H1:K52≠C** P-Value<0.05,所以丢弃H0。取H1(即K52≠C**)
结论:CKD 模具Cavity别与其他Mould外径尺寸有差异。
对策:全部使用现地化部品。停止使用CKD资材【续上】
4. NOV-23-2000Page*A对 Day ,Line ,Shift & Time 进行多变量分析如下3)Line(Operator) Analysis D – 6 Line 有工程不良有异常
5. NOV-23-2000Page*AP-Value<0.05 对各个Factor 进行Kruskal-Wallis TestDefect Data Analysis for Line
6. NOV-23-2000Page*Line – Defect AnalysisA
7. NOV-23-2000Page*Defect Effect by Line Analysis AFactoryP-ValueSignificant (P<0.05) Time0.588NO Shift0.086NO Line0.000YES( D-6 line) Day0.837NO
13. NOV-23-2000Page*Main Effect Plot for Nut Force主效果图分析
有效果的Factor : A (Nut Dim) ,B (C/L Dim), D (Bond) & E (Point Height);
无效果的Factor : C (C/L Point) ,F (Nut Height);
Factor A , D & E 为正相关;
Factor B 为负相关。I
14. NOV-23-2000Page*Main Effect Order for Nut Force在留意水准5%。离以上正态线越远,效果越留意,从上图可知:各Factor对Nut Force留意大小顺序为 A>D>B>E.
15. NOV-23-2000Page*Interaction Plot for Nut ForceI结论:各个Factor间无交互作用 (No Interaction Effect)