6.2,查表得A2=0.577,D4=2.115,D3为0。从现场收集一子组,观测数据为38,29,32,31,36.
R图的上控制限为()
A.15 B.8 C.13 D.10正确答案C
6.2,查表得A2=0.577,D4=2.115,D3为0。从现场收集一子组,观测数据为38,29,32,31,36.
R图的上控制限为()
6.2,查表得A2=0.577,D4=2.115,D3为0。从现场收集一子组,观测数据为38,29,32,31,36.
R图的上控制限为()
A.15 B.8 C.13 D.10正确答案C