八种控制图应用实例(minitab)

Xbar-R Chart of C1UCL=45.1140Sample Mean30__X=29.7620LCL=14.41101357911Sample131517196045301501357911Sample13151719UCL=56.26Sample Range_R=26.61LCL=0

2、试作均值极差控制图、中位数极差控制图和均值标准差控制图

Xbar-R Chart of C1UCL=45.2740Sample Mean30__X=29.8620LCL=14.4610135791113Sample151719212325604530150135791113Sample151719212325UCL=56.47Sample Range_R=26.70LCL=0

Xbar-S Chart of C1UCL=45.2740Sample Mean30__X=29.8620LCL=14.4610135791113Sample151719212325UCL=22.5420Sample StDev151050135791113Sample151719212325LCL=0_S=10.79 3、试作移动极差控制图

I-MR Chart of C168.01Individual ValueUCL=67.65767.567.066.566.013579111315Observation17_X=67.036LCL=66.41611921232511110.8UCL=0.7624Moving Range0.60.40.20.013579111315Observation1719212325__MR=0.2333LCL=0 4、试作样本大小n相等时的p控制图

P Chart of C10.300.250.200.150.100.050.0013579111315Sample1719212325LCL=0_P=0.1496UCL=0.3009Proportion

5、试作样本大小n相等时的pn控制图

NP Chart of C610UCL=9.498Sample Count6__NP=3.7642013579111315Sample1719212325LCL=0 6.

试作样本大小n不相等时的p控制图

〔案例〕

某电机厂生产洗衣机用小型电机，构成交验批的批量各不相等，现每隔1小时抽取一个样本，共25批，经检验将不合格品数及不合格品率记入数据表，试作分析用控制图。

P Chart of C40.060.050.040.030.020.010.0013579111315Sample1719212325LCL=0UCL=0.05033Proportion_P=0.024Tests performed with unequal sample sizes 7. 试作C控制图

某电线生产过程中，每隔一定时间对100m导线进行检查，检查的结果如表所示，试作C控制图。

C Chart of C810UCL=9.438Sample Count64_C=3.682013579111315Sample1719212325LCL=0 8. 试作U控制图

某电子产品检查的结果如表所示，试作U控制图。

U Chart of C1287Sample Count Per Unit65432101357911Sample13151719UCL=6.221_U=2.415LCL=0Tests performed with unequal sample sizes