loading time series data into spss：负荷时间序列数据进行spss

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1、LoadingTimeSeriesDataintoSPSS.Openair.xlsinSPSS,useFile>Open>Data.Todefinethedatevariable,intheSPSSDataEditorclickonVariableViewatthebottomoftheworksheetandchangethedatetypeforthevariabledatetoDatemm/dd/yyyy.NexttodefinethedateclickonDataandDefineDates,selectYear,Monthandtyp

2、einthefirstyearandfirstmonthinthedata,49and1fortheairdata.Plotthedata:Graph>SequenceVariable:airTimeAxisLabels:DATE.FORMAT:"MMMYYYY"PlotthegraphofthetimeseriesforeachoptionNaturalLogarithm,Difference,SeasonalDifferenceGraph>TimeSeries>AutocorrelationVariable:airPlotthegrapho

3、fthetimeseriesforeachoptionNaturalLogarithm,Difference,SeasonalDifferenceWhatdoyounoticeabouttheplotsofthedataandtheACFandPACF?Analyze>TimeSeries>ARIMA