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【正文】 。twodevicesforimprovingtheefficiencyofgashomeheatingsystems.Energyconsumptioninhouseswasmeasuredafteroneofthetwodeviceswasinstalled.Thetwodeviceswereanelectricventdamper(Damper=1)andathermallyactivatedventdamper(Damper=2).Theenergyconsumptiondata()arestackedinonecolumnwithagroupingcolumn(Damper)containingidentifiersorsubscriptstodenotethepopulation.Supposethatyouperformedavariancetestandfoundnoevidenceforvariancesbeingunequal(seeExampleof2Variances).Nowyouwanttoparetheeffectivenessofthesetwodevicesbydeterminingwhetherornotthereisanyevidencethatthedifferencebetweenthedevicesisdifferentfromzero.打開(kāi) 假設(shè)檢定 continue? 實(shí)例結(jié)果TwosampleTforDamperNMeanStDevSEMean140250Difference=mu(1)mu(2)Estimatefordifference:95%CIfordifference:(,)TTestofdifference=0(vsnot=):TValue=PValue=DF=80假設(shè)檢定 continue? ANOVA :為產(chǎn)能考量 ,需調(diào)整 GEPhotoPostBake溫度 ,實(shí)驗(yàn)為由 140度降至 120度 ,因此 ,需檢定調(diào)之後 ,ADI值是否會(huì)受影響 ?將資料分為調(diào)整之前與調(diào)整之後 ,各收集 10天左右的資料 :比較平均數(shù) ,兩母體資料 .?twosamplettest假設(shè)檢定 continue? Step1:輸入資料假設(shè)檢定 continue? Step2:檢定兩資料變異數(shù)是否有差異 檢定結(jié)果 NLowerStDevUpperBefore30After52FTest(normaldistribution)Teststatistic=,pvalue=以 F test之結(jié)果判斷： 變異數(shù)無(wú)差異假設(shè)檢定 continue? Step3:選擇功能 (Stat?ANOVA?Oneway)假設(shè)檢定 continue? Step4:將資料點(diǎn)選至 Data欄 ,Factor則點(diǎn)選至 Factor欄假設(shè)檢定 continue? Step5:按下 ok,顯現(xiàn)結(jié)果檢定結(jié)果Source DF SS MS F PFactor 1 Error 80 Total 81 以 ANOVA之結(jié)果判斷： 無(wú)差異假設(shè)檢定 continue? 實(shí)例結(jié)果Youdesignanexperimenttoassessthedurabilityoffourexperimentalcarpetproducts.Youplaceasampleofeachofthecarpetproductsinfourhomesandyoumeasuredurabilityafter60days.Becauseyouwishtotesttheequalityofmeansandtoassessthedifferencesinmeans,youusetheonewayANOVAprocedure(datainstackedform)withmultipleparisons.Generally,youwouldchooseonemultipleparisonmethodasappropriateforyourdata.However,twomethodsareselectedheretodemonstrateMinitab39。scapabilities.打開(kāi) EXH_AOV 假設(shè)檢定 continue? 實(shí)例結(jié)果SourceDFSSMSFPCarpet3Error12Total15S=RSq=%RSq(adj)=%謝謝觀看 /歡迎下載BY FAITH I MEAN A VISION OF GOOD ONE CHERISHES AND THE ENTHUSIASM THAT PUSHES ONE TO SEEK ITS FULFILLMENT REGARDLESS OF OBSTACLES. BY FAITH I BY FAITH
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