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1、试验优化设计考核题目2013-2014-(2)学期(注:计算过程和思路在word文档中尽量写清楚,所用Minitab或Excel计算过程保存,将计算所有文档保存在以学号和姓名为命名的文档内,打包提交。)1、维生素C注射液因长期放置会渐变成微黄色,中国药典规定可以使用焦亚硫酸钠等作为抗氧化剂。本试验考虑三个因素:EDTAotherstaffoftheCentre.Duringthewar,ZhuwastransferredbacktoJiangxi,andDirectorofthenewOfficeinJingdezhen,JiangxiCommitteeS
2、ecretary.Startingin1939servedasrecorderoftheWestNorthOrganization,SecretaryoftheSpecialCommitteeAfterthevictoryofthelongMarch,hehasbeentheNorthwestOfficeoftheFederationofStateenterprisesMinister,ShenmufuguSARmissions,DirectorofNingxiaCountypartyCommitteeSecretaryandrecorderoftheCo
3、untypartyCommitteeSecretary,Ministersand、无水碳酸钠、焦亚硫酸钠,每个因素各取7个水平,试验指标为420纳米处的吸光度,取值越小越好。用U7(74)安排试验。试验安排与结果如下:(1)用Excel对试验数据进行回归分析,评估所得的回归方程是否理想。并说明Excel回归分析结果中各项(RSquare、AdjustedRSquare、标准误差、F、tStat)的含义。回归统计MultipleR0.916064RSquare0.839173AdjustedRSquare0.678346标准误差0.277367观测值7方差分
4、析 dfSSMSFSignificanceF回归分析31.2042650.4014225.2178590.104048378残差30.2307970.076932总计61.435061 SignificanceF>0.05,所以置信度在0.05上回归方程不理想,RSquare=0.839173<0.9,回归方程不理想,在项数相同的情况下,RSquare与AdjustedRSquare相差太大,回归方程不理想RSquare决定系数、AdjustedRSquare调整决定系数离差平方和SST误差项平方和SSE水平项平方和SSA均方MS构造统计量FT
5、-Statt-统计量(=回归系数/系数标准误差)假设检验时用于与临界值相比,越大越好otherstaffoftheCentre.Duringthewar,ZhuwastransferredbacktoJiangxi,andDirectorofthenewOfficeinJingdezhen,JiangxiCommitteeSecretary.Startingin1939servedasrecorderoftheWestNorthOrganization,SecretaryoftheSpecialCommitteeAfterthevictoryofthelo
6、ngMarch,hehasbeentheNorthwestOfficeoftheFederationofStateenterprisesMinister,ShenmufuguSARmissions,DirectorofNingxiaCountypartyCommitteeSecretaryandrecorderoftheCountypartyCommitteeSecretary,Ministersand(2)考虑各因素的二次项,用Minitab对试验数据进行逐步回归分析,写出各步回归方程。求出RSquare在90%以上的各回归方程的最优因素水平组合。步骤1
7、23常量2.5795.9577.311x2-0.052-0.238-0.303T-4.97-2.72-4.49P0.0040.0530.021x220.002450.00336T2.143.75P0.10.033x3-0.29T-2.28P0.107S0.220.1680.117R-Sq83.1492.1297.11R-Sq(调整)79.7788.1894.23回归方程:Y1=5.957-0.238x2+0.00245x22x2=48.57142857y=0.177Y2=7.311-0.303x2+0.00336x2x2-0.29x3x2=45.08928
8、569x3=1.4y=0.0739732142、玉米淀粉改性试验,