用Excel2007绘制均值-极差控制图.docVIP

用EXCEL绘制控制图例5-3：某汽车发动机制造厂要求对活塞环零件的制造过程建立均值-极差控制图，对直径进行质量控制。表5-14 活塞环直径的数据表样本序号观测值均值极差174.03074.00274.01973.99274.00874.0100.038273.99573.99274.00174.00174.01174.0000.019373.98874.02474.02174.00574.00274.0080.036474.00273.99673.99374.01574.00974.0030.022573.99274.00774.01573.98974.01474.0030.026674.00973.99473.99773.98573.99373.9960.024773.99574.00673.99474.00074.00574.0000.012873.98574.00373.99374.01573.99873.9990.030974.00873.99574.00974.00574.00474.0040.0141073.99874.00073.99074.00773.99573.9980.0171173.99473.99873.99473.99573.99073.9940.0081274.00474.00074.00774.00073.99674.0010.0111373.98374.00273.99873.99774.01273.9980.0291474.00673.96773.99474.00073.98473.9900.0391574.01274.01473.99873.99974.00774.0060.0161674.00073.98474.00573.99873.99673.9970.0211773.99474.01273.98674.00574.00774.0010.0261874.00674.01074.01874.00374.00074.0070.0181973.98474.00274.00374.00573.99773.9980.0212074.00074.01074.01374.02074.00374.0090.0202173.99874.00174.00974.00573.99674.0020.0132274.00473.99973.99074.00674.00974.0020.0192374.01073.98973.99074.00974.01474.0020.0252474.01574.00873.99374.00074.01074.0050.0222573.98273.98473.99574.01774.01373.9980.035绘图步骤：（1）在EXCEL表格中输入25组数据。（2）计算每一组样本的平均值和极差（3）计算25组样本平均值的总平均值和25组样本极差的平均值（4）计算图和R图的控制界限，并输入表格中（5）选中均值列数据生成折线图（6）选中折线图，右击选择数据源，分别添加UCL、CL、LCL三列数据。得到数据折线图如下所示。（7）修改上面的控制图。点中间的绿线，右击，设置数据系列格式。将数据标记选项中数据标记类型选择“无”。用同样的方法修改另外两条折线，并将线型改为虚线。得到以下控制图为改变图中右侧系列1、系列2、系列3、系列4的名称，将表格中UCL、CL、LCL的名称分别改为UCL=74.014，CL=74.001，LCL=73.988。右击图形，选择数据选择系列2，编辑，将系列名称改为UCL=74.014。用同样的方法，分别更改系列3和系列4的名称。更改系列名称后