统计分析SAS练习.docx
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统计分析SAS练习.docx
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统计分析SAS练习
第七章t检验
单样本t检测,用means、univariate
datatemp;
inputx@@;
y=x-20.7;
cards;
20.9920.4120.1020.0020.9122.60
20.9920.4220.9022.9923.1220.89
;
procmeansmeanstderrtprobt;
vary;
run;
datatemp;
inputx@@;
y=x-20.7;
cards;
20.9920.4120.1020.0020.9122.60
20.9920.4220.9022.9923.1220.89
;
procunivariatenormal;
vary;
run;
无原始数据的单样本t检验:
datatemp;
inputu0u1sn;
t=(u1-u0)/(s/sqrt(n));
v=n-1;
p=probt(t,v);
cards;
7274.26.525
;
procprint;
run;
配对的t检测:
有两个对比的检测有ttestmeansunivariate
datatemp;
inputidab;
cards;
12.412.80
22.903.04
32.751.88
42.233.43
53.673.81
64.494.00
75.164.44
85.455.41
92.061.24
101.641.83
111.061.45
120.770.92
;
procttest;
paireda*b;
run;
datatemp;
inputidab;
y=a-b;
cards;
12.412.80
22.903.04
32.751.88
42.233.43
53.673.81
64.494.00
75.164.44
85.455.41
92.061.24
101.641.83
111.061.45
120.770.92
;
procunivariatenormal;
vary;
run;
正态性检测:
wp,t=0.162pr=0.87>0.05,接受H0;
datatemp;
inputidab;
y=a-b;
cards;
12.412.80
22.903.04
32.751.88
42.233.43
53.673.81
64.494.00
75.164.44
85.455.41
92.061.24
101.641.83
111.061.45
120.770.92
;
procmeansmeanstderrtprobt;
vary;
run;
datatemp;
inputdsn;
t=d/(s/sqrt(n));
v=n-1;
p=probt(t,v);
cards;
0.6250.788
;
procprint;
run;
独立样本t检测
datatemp;
inputgroupx@@;
cards;
1134114611041119112411611107183111311291971123
2702118210128521072132294
procttest;
classgroup;
varx;
run;
datatemp;
inputx1x2n1n2s1s2;
sc=sqrt((1/n1+1/n2)*((n1-1)*s1**2+(n2-1)*s2**2)/(n1+n2-2));
t=(x2-x1)/sc;
v=n1+n2-2;
p=probt(t,v);
cards;
20.9521.7920205.893.43
;
procprint;
run;
第九章直线回归和相关
dataexam9_1;
inputx1x2@@;
cards;
1.213.901.304.501.394.201.424.831.474.16
1.564.931.684.321.724.991.984.702.105.20
;
procgplot;/*拓扑图*/
plotx2*x1='*';/*图*/
run;
proccorr;
varx1x2;
run;
相关性相关系数为:
0.68073。
p为0.0303
dataexm9_2;
inputxy@@;
cards;
7945803091169024702887259214
;
proccorrspearman;
varxy;
run;
直线回归
dataexm9_3;
inputxy@@;
cards;
25.59.219.57.824.09.4
20.58.625.09.022.08.8
21.59.023.59.426.59.7
23.59.426.59.723.58.8
22.08.520.08.228.09.9
;
procreg;
modely=x/rclm;/*针对每一条的观测的输出*/
run;
多元线性回归
datatemp;
inputx1x2x3y;
cards;
51.373.636.42.99
48.983.934.03.11
42.878.331.01.91
55.077.131.02.63
45.381.730.02.86
45.374.832.01.91
51.473.736.52.98
53.879.437.03.28
49.072.630.12.52
53.979.537.13.27
;
procreg;
modely=x1x2x3/tolvifcollinselection=stepwiser;
run;
偏相关与复相关
dataexm10_2;
inputx1x2x3x4y;
cards;
72666078.5
129155274.3
;
proccorr;
varx1x2x3x4y;
run;
proccorrnosimple;
varx1y;
partialx2x3x4;
run;
proccorrnosimple;
varx2y;
partialx1x3x4;
run;
proccorrnosimple;
varx3y;
partialx2x1x4;
run;
proccorrnosimple;
varx4y;
partialx2x3x1;
run;
proccorrnosimple;
varx1x2x3y;
partialx4;
run;
dataexm10_2;
inputx1x2x3x4y;
cards;
72666078.5
129155274.3
1156820104.3
113184787.6
75263395.9
;
proccorr;
varx1x2x3x4y;
run;
proccorrnosimple;
varx1y;
partialx2x3x4;
run;
proccorrnosimple;
varx2y;
partialx1x3x4;
run;
proccorrnosimple;
varx3y;
partialx2x1x4;
run;
proccorrnosimple;
varx4y;
partialx2x3x1;
run;
proccorrnosimple;
varx1x2x3y;
partialx4;
run;
第十四章非参数检验
dataexm10_2;
inputx1x2x3x4y;
cards;
72666078.5
129155274.3
1156820104.3
113184787.6
75263395.9
;
proccorr;
varx1x2x3x4y;
run;
proccorrnosimple;
varx1y;
partialx2x3x4;
run;
proccorrnosimple;
varx2y;
partialx1x3x4;
run;
proccorrnosimple;
varx3y;
partialx2x1x4;
run;
proccorrnosimple;
varx4y;
partialx2x3x1;
run;
proccorrnosimple;
varx1x2x3y;
partialx4;
run;
dataexm4_2;
inputwt@@;
devi=wt-2.15;
cards;
2.152.102.202.1.2
2.422.522.622.72
2.993.193.374.57
;
procunivariate;/单变量/
vardevi;
run;
P<0.05,小概率事件发生,拒绝H0,接受H1。
配对的非参数的检验:
dataexm10_2;
inputx1x2x3x4y;
cards;
72666078.5
129155274.3
1156820104.3
113184787.6
75263395.9
;
proccorr;
varx1x2x3x4y;
run;
proccorrnosimple;
varx1y;
partialx2x3x4;
run;
proccorrnosimple;
varx2y;
partialx1x3x4;
run;
proccorrnosimple;
varx3y;
partialx2x1x4;
run;
proccorrnosimple;
varx4y;
partialx2x3x1;
run;
proccorrnosimple;
varx1x2x3y;
partialx4;
run;
dataexm4_2;
inputwt@@;
devi=wt-2.15;
cards;
2.152.102.202.1.2
2.422.522.622.72
2.993.193.374.57
;
procunivariate;/单变量/
vardevi;
run;
dataex14_4;
inputx1x2;
d=x1-x2;
cards;
3955
4254
5155
4347
5553
4563
2252
4844
4048
4555
4032
4957
;
procunivariate;
vard;
run;
两种非参数检验
dataex14_6;
inputgroupveci@@;
cards;
12.7813.2314.214.8715.12
16.2117.1818.0518.5619.6
23.2323.524.0424.1524.28
24.3424.4724.6424.7524.82
24.9525.10
;
procnparlwaywilcoxon;
classgroup;
varveci;
run;
dataex14_9;
dogroup=1to3;
inputrate@@;
output;end;
cards;
32.516.06.5
35.520.59.0
40.522.512.5
46.029.018.0
49.036.024.0
;
procnparlwaywilcoxon;
classgroup;
varrate;
run;
dataex14_12;
dox=1to4;
dog=1to2;
inputf@@;
output;
end;end;
cards;
6542
186
3023
1311
;
procnparlwaywilcoxon;
calssg;
varx;
freqf;
run;
dataex14_12;
dox=1to4;
dog=1to4;
inputf@@;
output;
end;end;
cards;
0353
2575
9533
6220
;
procnparlwaywilcoxon;
calssg;
varx;
freqf;
run;
dataex14_17;
inputxy@@;
cards;;
7945803091169024
702887259214
;
proccorrspearman;
varxy;
run;
dataexm14_15;
doblock=1to8;
dotreat=1to4;
inputrate@@;
output;
end;end;
cards;
8.49.69.811.7
11.612.711.812.0
9.49.110.49.8
9.88.79.912.0
8.38.08.68.6
8.69.89.610.6
8.99.010.611.4
7.88.28.510.8
;
procsortdata=exm14_15out=a;
byblock;
run;
procrankdata=aout=b;
varrate;
byblock;
ranksr;
procglmdata=b;
classtreatblock;
modelr=treatblock;
run;
第十六章主成分分析
dataex16_1;
inputx1-x4;
cards;
402.0520
101.5530
1203.01350
2504.5180
1203.5950
101.51250
401.01940
;
procprincompdata=ex16_1out=out1outstat=stat1prefix=z;
varx1-x4;
run;'
procprintdata=out1;
title'output:
out1';
run;
procprintdata=stat1;
title'output:
stat1';
run;
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