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1、Statistica 6.0进行单因素方差分析的流程:制作表格:格式如下图。第一列为重复,第二列为处理编号,第三列为观察值。2.点击StatisticsANOVA,出现如下对话框,选择one-way ANOVA,点击OK,出现如下对话框:点击Vaiables,选择Length列为因变量,con列为因素。如下图;连续点击两次OK,出现如下:ANOVA Re sult s 1 :.ProfilerRe lidsMatrixReportQuick 11 =1Mh=:JLECcmpEeffects/GraphAlpha. v:aluesC-jnti dene e濒gSigni tiuiiLE1.050
2、 g不 rilore rezult寺 Nodi fyClose国口ptiunb |点击All effects/Graph,产生如下数据,可以总体上看各组之间有没有显著差异。点击Ok出现如下图表:con: L$ MeansCurrent effect F(5, 144)=76.057, p=0.0000Effective hypothesis decompositionVert cal bars denote 0 95 confidence ntervals点击下图所示左下角的“ ANOVA Result 1. Ad”回到前一个界面;Q W Ed队Jykuirt Ftut 1 Mictlac 三
3、it早X。工gLe-_i3 血 JE m iJ娅 BeE STAT I STI CA - Vorklxwkl* - Cdb. LS Huiiu宣13鼻麝崖 ANOVA Re sul t s 1 : _Q.ProfilerRe 5idsMatrixReportM 白 aiLMgm 3lw工 机区3T茹啜*4 国虐Ctin.LS kieaisAlpha v:aluesCcnti dene 旦|.950 gSigni fic:iiLce1.050 点击More result, 出现下图:点击Means选项卡,点击Observed, unweighted,出现如下图,可以看到均值等信息,也可选择其他模
4、型,Cell No.ccn; Unweighted Means (Spreadsheets) Current effect: F(5,144)=76.037, p=0.0000 Effective hypothesis decompositionconlength Meanlength Std.Err.length -96.00%length +95.00%N1D1.9462650.0349061.8762712.01425934230011.0BO5330.0371601.0070841.9539833036001.7914710.0493641.6938981.8090431?412001
5、.522200.0455121.4322431.61215720624001.3262690.0391701.2488361.40368227648001.0620000.0433940.9662291.13777122点击Plot,则出现未加权的观测值的图表: n, .jlih I 71 1 i .(:l.r.l I “.加I 咛:I * r .J I :)(:l :) -.H.liF. I,| I- II.: i: I.jl.i - I.JI m JI ICzii E iItT::-? l ccr:X:dcio点击Post-hoc选项卡,选Homogeneous groups, 0.05置
6、信区间,进行“Unequal N HSD分析,因为比较的几个样本重复次数不同,出现下图:Unequal N HSD; variable lengih (Spreadsheet) Homogenous Groups, alpha = .05000 Error: Between MS = .04143, df = 144.00Cell Na.conlength Mean1234648001.052000|624001.326269,L .1.L412001.522200,J.A36001791471J. J. J. J.23001 .B80533101.945265从图中可以看出,处理1,2, 3
7、之间无显著差异,4, 5, 6与123之间均有显著差异。如果要看P值,可以选择“significant differ”选项,同样进行Unequal N HSD”分析,结果如下:Cell No.Unequal N HSD; variable length (Spreadsheet2 Probabiliiies for Post Hoc TestsError: Between MS = .04143. df = 144.00con(U1.9463P1.830631.79151.62221.3263阿 1.06201_gJ-0.8213650.2362130.0000200.0000200.00002023000.82136507984140.0000210.0000200.00002036000.2362130.7984 U0.0016090.0000200.000020412000.0000200.0000210.0016090.0282260.000020524000.0000200.0000200.0000200.02822G0.00013064B000.0000200.0000200.0000200.0000200.000130红色标志的P值为小于0.05的值。
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