MOOC SAS基础(对外经济贸易大学)1451752169 最新慕课完整章节测试答案
1. SAS基础
第一周课堂练习
1、单选题:
显示SAS程序运行状态的窗口是
选项:
A: Editor
B: Output
C: Log
D: Explorer
答案: 【 Log】
2、单选题:
SAS程序的每条语句必须以( )符号结束。
选项:
A: 逗号
B: 分号
C: 点句号
D: 单引号
答案: 【 分号】
3、单选题:
SAS数据集的种类有()。
选项:
A: 临时数据集和永久数据集
B: 目录
C: 永久数据集
D: 表
答案: 【 临时数据集和永久数据集】
4、单选题:
Which is a valid LIBNAME statement?
选项:
A: libname "_ SAS_ data_ library_location_”;
B: sasdata libname "_ SAS_ data_ library_location_”;
C: libname sasdata "_ SAS_ data_ library_location_”;
D: libname sasdata sas "_ SAS_ data_ library_location_”;
答案: 【 libname sasdata "_ SAS_ data_ library_location_”;】
5、单选题:
SAS过程步由( )关键词引出。
选项:
A: DARA
B: PROC
C: CARDS
D: RUN
答案: 【 PROC】
2. SAS语言
第七周课堂练习
1、单选题:
A raw data file is listed below.1901 21905 11910 61925 11941 1The following SAS program is submitted and references the raw data file above:data money;infile 'file-specification';input year quantity;total=total+quantity;run;What is the value of total when the data step finishes executing?
选项:
A: 0
B: 1
C: 11
D: . (missing numeric value)
答案: 【 . (missing numeric value)】
2、单选题:
A raw data file is listed below.10232015.25 The following program is submitted:data all_sales;infile 'file-specification';input receipts;<insert statement(s) here>run; Which statement(s) complete(s) the program and produce(s) a running total of theReceipts variable?
选项:
A: total+receipts;
B: total 0;sum total;
C: total=total+receipts;
D: total=sum(total,receipts);
答案: 【 total+receipts;】
3、单选题:
The following program is submitted:data test;average=mean(6,4,.,2);run;What is the value of average?
选项:
A: 0
B: 3
C: 4
D: . (missing numeric value)
答案: 【 4】
4、单选题:
The following SAS program is submitted:data WORK.DATE_INFO;Day="01" ;Yr=1960 ;X=mdy(Day,01,Yr) ;run;What is the value of the variable X?
选项:
A: the numeric value 0
B: the character value "01011960"
C: a missing value due to syntax errors
D: the step will not compile because of the character argument in the mdy function.
答案: 【 the numeric value 0】
5、单选题:
Which statement specifies that records 1 through 10 are to be read from the raw data file customer.txt?
选项:
A: infile 'customer.txt' 1-10;
B: input 'customer.txt' stop@10;
C: infile 'customer.txt' obs=10;
D: input 'customer.txt' stop=10;
答案: 【 infile 'customer.txt' obs=10;】
第三周课堂练习
1、单选题:
对日期型数据,在