SAS实验报告Word下载.docx

SAS实验报告Word下载.docx

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11140233483.8

121166912113.2

131068812109.4

datach;

inputX1X2X3X4Y@@;

cards;

72666078.5

129155274.3

1156820104.3

113184787.6

75263395.6

1155922109.2

371176102.7

131224472.5

254182293.1

2147426115.9

140233483.8

1166912113.2

1068812109.4

;

procreg;

modelY=X1-X4;

modelY=X1-X4/selection=stepwise;

run;

SAS系统2012年03月20日星期二下午04时44分30秒1

TheREGProcedure

Model:

MODEL1

DependentVariable:

Y

NumberofObservationsRead13

NumberofObservationsUsed13

AnalysisofVariance

SumofMean

SourceDFSquaresSquareFValuePr>

F

Model42664.41342666.10335112.01<

.0001

Error847.575815.94698

CorrectedTotal122711.98923

RootMSE2.43864R-Square0.9825

DependentMean95.39231AdjR-Sq0.9737

CoeffVar2.55644

ParameterEstimates

ParameterStandard

VariableDFEstimateErrortValuePr>

|t|

Intercept164.2494369.859960.920.3846

X111.541350.742532.080.0716

X210.487870.721610.680.5181

X310.092650.752440.120.9050

X41-0.164700.70692-0.230.8216

SAS系统2012年03月20日星期二下午04时44分30秒2

MODEL2

StepwiseSelection:

Step1

VariableX4Entered:

R-Square=0.6750andC（p）=139.2134

Model11830.567711830.5677122.850.0006

Error11881.4215280.12923

VariableEstimateErrorTypeIISSFValuePr>

Intercept117.529135.2549240082500.22<

X4-0.737890.154381830.5677122.850.0006

Boundsonconditionnumber:

1,1

----------------------------------------------------------------------------------------------------------------------------------

Step2

VariableX1Entered:

R-Square=0.9732andC（p）=5.2269

Model22639.275851319.63792181.48<

Error1072.713387.27134

Intercept103.062132.09468176032420.82<

X11.439610.13651808.70814111.22<

X4-0.613720.047971190.00441163.66<

1.0641,4.2564

Step3

VariableX2Entered:

R-Square=0.9824andC（p）=3.0152

SAS系统2012年03月20日星期二下午04时44分30秒3

Model32664.32325888.10775167.69<

Error947.665985.29622

Intercept72.6527314.09711140.6727426.560.0006

X11.451190.11662820.06061154.84<

X20.402350.1850225.047404.730.0577

X4-0.248780.1727310.986172.070.1837

18.94,116.36

Step4

VariableX4Removed:

R-Square=0.9784andC（p）=2.8625

Model22653.337071326.66854226.19<

Error1058.652165.86522

Intercept52.594952.300893064.65541522.51<

X11.468400.12208848.54499144.67<

X20.661230.046151204.06563205.29<

1.0551,4.2205

Allvariablesleftinthemodelaresignificantatthe0.1500level.

Noothervariablemetthe0.1500significancelevelforentryintothemodel.

SAS系统2012年03月20日星期二下午04时44分30秒4

SummaryofStepwiseSelection

VariableVariableNumberPartialModel

StepEnteredRemovedVarsInR-SquareR-SquareC（p）FValuePr>

1X410.67500.6750139.21322.850.0006

2X120.29820.97325.2269111.22<

3X230.00920.98243.01524.730.0577

4X420.00410.97842.86252.070.1837