201805060139莫轶雯

《201805060139莫轶雯》由会员上传分享，免费在线阅读，更多相关内容在工程资料-天天文库。

1、实用标准文案第五章201205060139莫轶雯1、下表资料为25名健康人的7项生化检验结果，7项生化检验指标依次命名为X1至X7，请对该资料进行主成分分析。X1X2X3X4X5X6X73.768.596.227.579.035.513.278.749.649.738.597.124.695.511.665.909.843.664.996.147.287.083.980.627.009.491.332.985.493.011.341.615.769.270.541.344.527.072.591.300

2、.443.311.031.001.173.682.171.271.571.551.515.2810.029.8412.6611.766.923.3611.6813.579.879.179.725.985.812.808.8413.609.777.502.171.794.545.337.633.5313.139.877.852.642.764.571.785.409.0213.7410.162.732.106.227.308.844.7618.5211.069.913.433.555.382.097.50

3、12.674.782.131.090.821.282.408.391.122.353.702.621.192.013.433.721.971.75精彩文档实用标准文案8.394.947.239.469.554.948.219.414.924.382.307.315.354.523.086.442.541.031.771.044.254.502.425.1110.056.687.7912.0011.748.079.1012.503.966.494.3911.582.771.793.752.455.249.

4、065.3716.183.512.104.663.101.432.812.272.421.051.291.720.91解：利用SPSS进行主成分分析，如下：公因子方差初始提取x11.000.797x21.000.773x31.000.859x41.000.980x51.000.983x61.000.976x71.000.834提取方法：主成份分析。由上表可以看出除x1和x2信息损失较大外，主成分几乎包含了各个原始变量至少90%的信息。解释的总方差成份初始特征值提取平方和载入合计方差的%累积%合计方差的%

5、累积%13.39548.50348.5033.39548.50348.50322.80640.09088.5932.80640.09088.5933.4366.23694.8284.2763.94698.7755.0811.16099.9356.004.05999.9947.000.006100.000精彩文档实用标准文案提取方法：主成份分析。解释的总方差表显示了各主成分解释原始变量总方差的情况，SPSS默认保留特征根大于1的主成分，在表中可以看出保留2个主成分为宜，这两个主成分集中了原始7个变量信息的

6、88.593%，可见效果比较好。成份矩阵a成份12x1.746.489x2.796.372x3.709-.597x4.911.389x5-.234.963x6-.177.972x7-.886.219提取方法:主成份。a.已提取了2个成份。成分矩阵表给出了标准化原始变量用求得的主成分线性表示的近似表达式，如x1的近似表达式：x1=0.746prin1+0.489prin2最后将成分矩阵表中的第i列的每个元素分别除以第i个特征根的平方根，就可以得到主成分分析的第i个主成分的系数。2、对企业经济效益指标体系的

7、八项指标建立主成分分析模型。数据如下表所示：表2原始数据表格厂家编号及指标固定资产利税率资金利税率销售收入利税率资金利润率固定资产产值率流动资金周转天数万元产值能耗全员劳动生产率1琉璃河16.6826.7531.8418.453.255528.831.752邯郸19.727.5632.9419.259.825532.922.873大同15.223.432.9816.2446.786541.691.534哈尔滨7.298.9721.34.7634.396239.281.635华新29.4556.4940.

8、7443.6875.326926.682.146湘乡32.9342.7847.9833.8766.465032.872.67柳州25.3937.8236.7627.5668.186335.792.438峨嵋15.0519.4927.2114.216.137635.761.75精彩文档实用标准文案9耀县19.8228.7833.4120.1759.257139.131.8310永登21.1335.239.1626.5252.476235.08