Minitab Introduction

03:MinitabIntroductionAnOverviewofMinitabver12.2GEGlobalResearchGreenBeltDMAICCourseTypeIErroraTypeIIErrorbCorrectDecision(1-a)CorrectDecision(1-b)90807060Y=50X1X2FuelEconomyOctaneLevelAirTemp252015105Subgroup04.34.24.14.03.93.83.7SampleMean11X=4.0963.0SL=4.232-3.0SL=3.9590.60.50.40.30.20.10.0SampleStDev1S=0.14033.0SL=0.2409-3.0SL=0.03982Xbar/SChartforEvaluationsWhatisMinitab?•Statisticalsoftwarepackage•Hasmanyofthetoolsneededtosuccessfullyanalyzedatawithrigor-Graphs-Statisticaltoolsfordataanalysis-SixSigmaReportsCurrentSoftwareRelease:12.2WhatMinitabCanDo*•DescriptiveStatistics•GageR&R•CapabilityAnalysis(ZST/ZLT)•Graphing-ManyTypes!•Pareto,Fishbone•HypothesisTesting•Product&ProcessSixSigmaReports•GenerationofTestPlansforDesignedExperiments•AnalysisofDOEresults•StatisticalProcessControl•RandomDataGenerationforsimulationsAGreatToolboxforSixSigmaProjects!*SubjectstobediscussedthroughoutthecourseWhatdoesMinitabLookLike?OnlyonewindowactiveatatimeHighlightedbarindicatesactivewindowMenuBarsSessionWindow(Keepsarunninglogofcommandsandoutputs)DataWindow(SimilartoanExcelspreadsheet)PullDownmenus&DialogBoxesWhatisaDialogBox?ThedialogboxisthewaytocommunicateyourrequirementstoMinitab(variables,options,analysismethods,etc.).*SeeAppendixformoreinformationondialogboxesThreedotsafteramenuselectionindicatesa“dialogbox”willappearwhenthatitemisselected.AnarrowheadindicatestherearemoremenuselectionsavailableEnteryourselectionshere...Andhere!ContextSensitiveHelpinMinitabisReallyHelpful!!ExampleofaDialogBox:WaystoenterdatainMinitabEntereddirectlyintothespreadsheet(the‘Data’window)-Typethedatadirectlyin-Usethedataentryarrowtochoosehowyouwishtoenterthedata(inrowsorincolumns)Copied/pasted-FromMINITAB-Fromother“Windows”softwareImported/Linked-Frommanycommonlyusedsoftwarepackages-FromsavedtextorASCIIfilesGeneratedbyMinitab-Randomdata-Patterneddata(Ex.:1,2,3,4,1,2,3,4....)-Referencedata(subscriptsthatindicatethesourceofthedata)MinitabTips-DataEntryWhenenteringdataintheDataWindow,therearethreeimportantaspects:•Dataisnormallyenteredincolumnsforeaseofanalysis(clickonthesmallarrowintheupperleftcornertochangeentrydirection)•Columnheadingsareenteredabovethecolumn,NOTinthefirstrow(31charactersmaximum)•Ifanalphabeticcharacteristypedinthefirstcellofacolumn,theentirecolumnisconvertedtotextHeadingRowTextColumnNumericColumnsDataEntryDirectionArrowSavingInformationinMinitab“Print”commandprintshighlightedwindowonly!Windowcanbedata,session,graph,etc.1)AsaWorksheet-Savesthedataonly.•SaveCurrentWorksheet(as)•SaveWorksheetas2)AsaProject-Data,sessiontext,graphs,andmore.•SaveProject(as)(1)(2)Scenario:AnewprocesshasrecentlybeeninstalledtomanufactureextrudedplasticsheetinAP5.Theexistingprocessisstillinservicemakingsheet.Wewanttodeterminewhetherthetwoprocessesproducesheetofthesamethickness.TheCTQforthisprocessissheetthickness.20sampleshavebeencollected(5subgroupswith4samplespersubgroup)takenatvarioustimesduringthetwo-shiftoperation.ClassExerciseStepsintheProcess:1.Enterthedata(Y’s)inaspreadsheet2.Addcolumnswithotherusefulinformation(X’s,subscripts,etc)3.Arrangethedataforanalysis(combine,stack,etc.)4.GraphthedataDefinethePracticalProblemFirst•StartablankworksheetandenterthedatabelowintocolumnsC1andC2.Labelyourcolumnsasindicated.•UsingtheEnterkeywillalwayscausethecursortomoveinthedirectionofthedataentryarrow.(Makesurethearrowispointingdown)•20DataPoints•5subgroups(fourdatapointstakenatdifferenttimesofday)•Themeasurementsareinthousandthsofaninch.Step1:EntertheDataColumnTitlesC1C2ExistingNew128.6128.7128.8129.0129.0129.1129.1129.3129.0129.1129.1129.2129.1129.2129.2129.4129.1129.2129.1129.2129.0129.2128.8129.0129.0129.2129.1129.2129.4129.6129.3129.5128.8129.0129.2129.4129.0129.0128.8128.9MinitabColumnHeadingsDoubleClicktocopyDataintoMinitabStep2:AdditionalColumnsofInformation•Minitabhasfeaturestomaketheaddingofadditionalinformationeasierthantypingitinbyhand.•Inthiscase,itwouldbeveryhelpfultonumberthesamplesandindicatethetimeofdaythesamplewastaken.Firsttypeintwonewcolumnheadings:C3:SampleNumberC4:TimeSeconduseMinitab’sbuilt-infeatureforgeneratingpatterneddata:IMPORTANTNOTE!!Minitabmusthaveuniquecolumnnamesforeachnewcolumn.CalcMakePatternedDataSimplesetofnumbersForColumnC3,wewouldliketoindicatethesamplenumber.Sincethereare20samples,C3shouldcontainnumbersfrom1-20.Here’showthatdataiscreated:Adialogboxshouldappear.Fillitinasshownbelow:Here’swhatthedatawindownowlookslike:IfyouhavemanydatapointsthisismucheasierthantypingtheminbyhandCalcMakePatternedDataSimpleSetofNumbersNow,let’sfillinthetimesthesamplesweretakeninColumnC4.Remember,therewere5subgroupsofdatawith4sampleseach.Subgroupsweretakenatthefollowingtimes:9:00am12:00pm3:00pm6:00pm9:00pmUsethesamemenucommand,butthistimeselect“Date/TimeValues”CalcMakePatternedDataSimplesetofDate/TimeValuesFillinthedialogboxasshownbelow:Thedataisinthespreadsheet-nowwehavetoarrangeitsoMinitabcananalyzeit...Click‘OK’Step3:ArrangingDataforAnalysis•Whatdoes‘stacking’mean?-Placingdatafrommultiplecolumnsintooneormore(new)columns•Ho