平均值与标准差控制图实验.doc

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1、实验六平均值与标准差控制图实验实验目的：根据例10.5.2中的数据，用SPSS制作平均值与标准差控制图实验步骤：生成平均值与标准差控制图的关键是计算平均值与标准差。在SPSS中，可以利用“描述”命令来计算序列的平均值与标准差，然后选择“图形”菜单下的制图命令生成相应的图即可。步骤1：输入和准备数据。步骤2：选择“分析/统计描述/描述”命令，计算均值和标准差，得如表7.1所示数据。表7.1控制图数据计算表组号测定值sixi1xi2xi3xi4xi5176.4276.5476.4576.5776.376.460.1069276.4176.3576.4476.2976.4776.39

2、0.0722376.2176.5476.2976.2176.2676.300.1374476.4876.3976.3976.5276.6976.490.1234576.3976.2276.5676.3676.4776.400.1271676.4676.2176.4776.4276.4976.410.1147776.2376.4276.3676.2676.4176.340.0868876.276.4876.4676.5476.4276.420.1304976.4776.3876.4676.3776.3176.400.06691076.4176.3576.3676.5676.487

3、6.430.08811176.5576.3976.5176.4276.2976.430.10261276.4376.4276.3576.3676.4276.400.03781376.4876.2976.2376.2576.5876.370.15531476.4976.2376.4376.4776.4176.410.10331576.276.5176.3476.5176.3676.380.13053/31676.1976.4376.3476.376.4376.340.10031776.4876.3976.3176.5376.5176.440.09211876.2376.4676.

4、5976.376.3976.390.14011976.4676.3176.476.3676.5876.420.10402076.4276.2376.3976.4876.5176.410.10922176.5276.6376.6276.3676.3576.500.13582276.3176.3976.2676.9276.3176.440.27342376.5876.3976.5276.4376.3276.450.10332476.3276.4376.6576.3976.3876.430.12702576.4576.5376.2676.3976.3376.390.1045平均值76

5、.410.1149步骤3：查控制图系数表，得控制界限。步骤4：整理均值数据和方差数据，形成序列，选择“图形/线图”，生成如图7.1的均值控制图和7.2所示的标准差控制图。图7.1均值控制图3/3图7.2方差控制图3/3