频数分析（proc freq） 案例（sas）

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1. 
   
2. PROC IMPORT OUT=no3
   
3. DATAFILE= 'C:\Documents and Settings\Administrator\桌面\新建 Microsoft Office Excel 97-2003 工作表.xls    '
   
4. DBMS=excel REPLACE;
   
5. GETNAMES=yes;
   
6. mixed=yes;
   
7. rUN;
   
8. 
   
9. data z;
   
10. set no3;
    
11. keep _COL5 _COL13 h year;
    
12. h=substr(left(_COL5),9,4 );
    
13. year=year(_COL13);
    
14. label h='省市代号'
    
15. year= '事故发生年';
    
16. run;
    
17. proc freq data=z;
    
18. table h*year/nocum nocol nopercent norow chisq out=b;
    
19. run;

复制代码

CHISQ

Requests chi-square tests and measures based on chi-square

NOCOL

Suppresses display of column percentages

NOCUM

Suppresses display of cumulative frequencies and percentages

NOPERCENT

Suppresses display of percentages

NOROW

Suppresses display of row percentages

OUT=	Names an output data set to contain frequency counts

MISSING

Treats missing values as nonmissing

LIST	Displays two-way to n-way tables in list format

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关键词：freq 频数分析 REQ Fre ROC proc freq