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proc univariate data=sasuser.gpa normal;
 var gpa;
run;
½á¹û£¨²¿·Ö£©ÈçÏ£º
  Univariate Procedure
Variable=GPA College Grade Point Average
 Moments
¡­¡­¡­¡­
 W:Normal  0.951556 Pr<W 0.0001
¡­¡­¡­¡­

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proc ttest data=sasuser.gpa;
 class sex;
 var satm;
run;
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 TTEST PROCEDURE
Variable: SATM Math SAT Score
SEX  N Mean  Std Dev Std Error
-----------------------------------------------------------------------------
Female 145 611.77241379  84.02056171 6.97752786
Male 79 565.02531646  82.92937599 9.33028376
¡¡
Variances T  DF Prob>|T|
---------------------------------------
Unequal 4.0124 162.2  0.0001
Equal  3.9969 222.0  0.0001
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For H0: Variances are equal, F' = 1.03 DF = (144,78) Prob>F' = 0.9114
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proc npar1way data=sasuser.gpa wilcoxon;
 class sex;
 var gpa;
run;

ÆäCLASSÓï¾äºÍVARÓëTTEST¹ý³ÌÏàͬ¡£½á¹ûÈçÏ£º 

  N P A R 1 W A Y P R O C E D U R E 
 Wilcoxon Scores (Rank Sums) for Variable GPA 
  Classified by Variable SEX 
 Sum of  Expected  Std Dev  Mean
 SEX N Scores  Under H0  Under H0 Score
 Female  145 16067.5000 16312.5000 463.429146 110.810345
 Male 79 9132.5000 8887.5000 463.429146 115.601266
  Average Scores Were Used for Ties
¡¡
 Wilcoxon 2-Sample Test (Normal Approximation)
 (with Continuity Correction of .5)
 S = 9132.50 Z = 0.527589 Prob > |Z| = 0.5978
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 T-Test Approx. Significance = 0.5983
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 Kruskal-Wallis Test (Chi-Square Approximation)
 CHISQ = 0.27949 DF = 1 Prob > CHISQ = 0.5970

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data new;
 set sasuser.gpa;
 dmv = satm - satv;
 keep dmv;
run;
proc univariate data=new;
 var dmv;
run;

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  Univariate Procedure
Variable=DMV
 Moments
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 N 224 Sum Wgts 224
 Mean  90.73661 Sum 20325
 Std Dev 92.82931 Variance 8617.28
 Skewness  -0.10367 Kurtosis  -0.34625
 USS 3765875 CSS 1921653
 CV 102.3063 Std Mean  6.202419
 T:Mean=0  14.62923 Pr>|T|  0.0001
 Num ^= 0 215 Num > 0 181
 M(Sign) 73.5 Pr>=|M|  0.0001
 Sgn Rank 9757.5 Pr>=|S|  0.0001

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 Summary of Fit
  Mean of Response  100.0263 R-Square 0.7729
  Root MSE 11.5111 Adj R-Sq 0.7445

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 C Total  18  9335.7368 . . .
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