數(shù)據(jù)間的顯著性分析

1、在SPSS里用Duncansmultiplerangetest進(jìn)行多組樣本間差異顯著性分析1 .軟件SPSSv17.02 .方法Duncansmultiplerangetest3 .適用范圍比較兩組以上樣本均數(shù)的差別，這時(shí)不能使用t檢驗(yàn)方法作兩兩間的比較（如有人對(duì)四組均數(shù)的比較，作6次兩兩間的t檢驗(yàn)），這勢(shì)必增加兩類錯(cuò)誤的可能性（如原先a定為0.05,這樣作多次的t檢驗(yàn)將使最終推斷時(shí)的a0.05）。故對(duì)于兩組以上的均數(shù)比較，必須使用方差分析的方法，當(dāng)然方差分析方法亦適用于兩組均數(shù)的比較。方差分析可調(diào)用此過(guò)程可完成。本過(guò)程只能進(jìn)行單因素方差分析，即完全隨機(jī)設(shè)計(jì)資料的方差分析。4 .數(shù)據(jù)格式X是每

2、組實(shí)驗(yàn)每次重復(fù)的數(shù)值，factor是實(shí)驗(yàn)分組丫答六曜E5wFileEcfttViewDateIrensformAnalyzeGraphsUtilitiesAdd-onsWindewHelp6目昌星SiLLi+?踴aidViewVariableViewSPSSStatisticsProcessor法ready5 .實(shí)現(xiàn)方法Analyze-CompareMeans-One-WayANOVA宣，UntitledlDataSetO一SPSSStatisticsDataEditor目回區(qū)）FileEditViewDataTransformABBAnalyzeGraphsUtililiesAdd-onsW

3、indowHelpReportsDescriptiveStatistics1Xfact(124.47224.47329.79450.00562.77652.13775.53871.28973.401077.661171.281273.40141:X24.47CompareMeansGeneralLinearModelCorrelateRegressionClassifyDimensionReductionScaleNonparametricTestsForecastingMultipleResponseQualityControl憶ROCCurve.Visible:2of2VariablesM

4、Means.tOne-SampleTTest.汽Independent-SamplesTTest.用!樂(lè)Paired-SamplesTTest.LOne-WayANOVA.DataViewVariableViewOne-WayANOVA.SPSSStatisticsProcessorisready點(diǎn)擊PostHoc.選擇方法，設(shè)置顯著水平EqualVariancesAssumedLSDS-N*K:_Waller-Duncan匚BonferroniTey100須錄Tufce/sbOunnett-Scheme同兇ncan；UlLad2R-E-G-WFHochbergsGT2R_EgM/aGabri

5、elFest2-3icfedOuConrtfolC)CorttoVariancesNMAssumed:TamhanesT3:口DunnetfsT3GameB*HoweilDiJinettsCSignificancelevel:q,%ContinueCancelHe|p.6 .查看結(jié)果看PostHocTests部分的表格按照顯著性水平P0.05分成3歹！J,三者之間有著顯著性差異(factorl,factor2,factor3和factor4),factor3和factor4之間差異不顯著。同Output11Lob-圓Oneway 白File 6- aActweD4tast一anova三lfc|

6、Po5tMOCTflStSrTrUe-i&)HamogendusSubsetsiOTjtleONEWAYXBYfactor/MIS51W3ANALYSIS/PjSTHXDUKAMALPHA(O.O5).OnewayDatiSell)ANOVASumofSauates(JfSaileFSiaBetweenGroupsWitnmGroupsW4535732142.52145783539111511911175B4907000PostHocTestsHomogeneousSubsets口untan.JatlsfNSublforalpha;口口號(hào)1211234Sig33332924331oooS4SB671.00073401374,1133342Mensfargroupsinhonnogeneoussubsetsardisplayeda.UsesHarmonicMeanSampleSizp=3OCO.SPSSSlfliFjbciProcw爾*E哂7.在表格中標(biāo)明差異顯著性根據(jù)這一結(jié)果即可做表格，四組分別以a,b,c,c標(biāo)明其顯著性差異表3-1藥物處理下不同時(shí)間的的抑制率處理時(shí)間(h)抑制率(狗2426.243.07a4854.Pfe6.S4b7273.4713c9674.113.25c注：采用DiiiK