A.State=scan(address2,2);
B.State=scan(address2,13,2);
C.State=substr(address2,2);
D.State=substr(address2,13,2);
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A.mean(var1,var4)
B.mean(var1-var4)
C.mean(of var1,var4)
D.mean(of var1-var4)
哪个SAS程序读取ID的值并保存每个Quantity值的记录,以便为每个记录创建三个观察值?()
A.data work.sales;infile unitsold;input ID $;do week=1to 3;input Quantity :comma.;output;end;run;
B.data work.sales;infile unitsold;input ID $@@;do week=1to 3;input Quantity :comma.;output;end;run;
C.data work.sales;infile unitsold;input ID $@;do week=1to 3;input Quantity :comma.;output;end;run;
D.data work.sales;infile unitsold;input ID $@;do week=1to 3;input Quantity :comma.@;output;end;run;
A.@n
B.+n
C./
D.all of the above
A.1959-12-31
B.1960-01-01
C.1960-01-02
D.1960-01-03
下面哪一段代码可以生成下述结果?()
A.data _null_;set work.scores;file ’c:\data\teamdat’dlm=’,’;put name highscore team;run;
B.data _null_;set work.scores;file ’c:\data\teamdat’dlm=’’;put name highscore team;run;
C.data _null_;set work.scores;file ’c:\data\teamdat’dsd;put name highscore team;run;
D.data _null_;set work.scores;file ’c:\data\teamdat’;put name highscore team;run;
下述程序运行后,变量顺序是?()
data perm.update;
infile invent;
input IDnum $15-19Item $1-13Instock 21-22
BackOrd 24-25;
Total=instock+backord;
run;
A.IDnum;Item;InStock;BackOrd ;Total
B.Item;IDnum ;InStock ;BackOrd ;Total
C.Total;IDnum;Item ;InStock ;BackOrd
D.Total;Item ;IDnum ;InStock ;BackOrd
A.0
B.1
C.2
D.3
A.创建数据集描述
B.创建第一条观测
C.创建PDV
D.创建_N__ERROR_自动变量
下述程序运行后,新数据集有几条观测?()
data combine;
set work.clients work.amounts;
run
A.4
B.6
C.10
D.5
下述程序运行后,新数据集有几条观测?()
data combine;
set work.clients;
set work.amounts;
run;
A.4
B.6
C.10
D.5
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欲研究高血压(HBP,1=患病、0=未患病)与年龄(age)、性别(gender)、体质指数(BMI)、日摄入钠量(NA)的关系。将年龄分组处理,以及根据我国体质指数标准划分体型后,用logistic回归对高血压与所有自变量建模,下面代码哪个是正确的?()
下列哪张图不是该代码可以输出的图?()proc logistic data=ez.loanplots(only)=(effect (clband x=(DELINQ))oddsratio);model BAD(event="1")=DELINQ;oddsratio DELINQ/diff=all cl=pl;run;
除了()其余都可以创建宏变量。
下列哪个符合永久逻辑库的命名规范?()
下列哪个选项在回归分析中不可用于强影响点的判断?()
下列哪种选项不是时间序列分析的模式辨识方法?()
下列哪项研究应该用因子分析?()
下述程序运行后,变量顺序是?()data perm.update;infile invent;input IDnum $15-19Item $1-13Instock 21-22BackOrd 24-25;Total=instock+backord;run;
下列哪个代码表示对时间序列进行二阶差分?()
哪个指针控件用于按顺序读取多个记录?()