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QUESTION 29

The following SAS program is submitted:?


libnametemp 'SAS-data-library';


data work.new;


set temp.jobs;


format newdate mmddyy10.;


qdate= qtr(newdate);


ddate= weekday(newdate);


run;


proc print data = work.new;


run;


The variable NEWDATE contains the SAS date value forApril 15, 2000. What output is produced if April 15, 2000 falls on a Saturday?

A. Obs newdate qdate ddate 1 APR152000 2 6


B. Obs newdate qdate ddate 1 04/15/2000 2 6

C. Obs newdate qdate ddate 1 APR152000 2 7


D. Obs newdate qdate ddate 1 04/15/2000 2 7

Answer: D

为什么不是B呢？

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关键词：求指点 following Saturday Variable produced following produced

QUESTION 38
The SASDATA.BANKS data set has five observations when the following SAS
program is submitted:

libnamesasdata 'SAS-date-library';

data allobs;

set sasdata.banks;

capital=0;

do year = 2000 to 2020 by 5;

capital + ((capital+2000) * rate);

output;

end;

How many observations will the ALLOBS data set contain?
A. 5 B. 15 C. 20 D. 25
Answer: D
do year = 2000 to 2020 by 5;
不就是2000，2005，2010，2015，2020共5个obersvations吗？

???QUESTION 39
A raw data file is listed below:

----|----10---|----20---|----30

John McCloskey 35 71

June Rosesette 10 43

TinekeJones 9 37

The following SAS program is submitted using the raw data file as input:
data work.homework;

infile 'file-specification';

input name $ age height;

if age LE 10;

run;

How many observations will the WORK.HOMEWORK data set contain?
A. 0

B. 2

C. 3

D. No data set is created as the program fails to execute due to errors.
Answer: C
row data里后面两列数字是第一列是age，后一列是height吗？如果是这样的话，不应该是B吗？

QUESTION 59
The following SAS program is submitted:

data work.staff;

JobCategory= 'FA';

JobLevel= '1';

jobCategory= JobCategory || JobLevel;

run;

Which one of the following is the value of the variable JOBCATEGORY in the output data set?
A. FA

B. FA1

C. FA 1

D. ' ' (missing character value)
Answer: A
对正确答案无疑问。只是想弄清楚jobCategory= JobCategory || JobLevel;
到底是什么意思？“||”代表什么啊？

SAS Help: The WEEKDAY function produces an integer that represents the day of the week, where 1=Sunday, 2=Monday, ..., 7=Saturday

Yvonnej1987 发表于 2012-9-13 01:51
QUESTION 38
The SASDATA.BANKS data set has five observations when the following SAS
program i ...

set SASDATA.BANKS；会读入5条记录，每条记录执行do循环会有5个output。因此会有5*5=25条

Yvonnej1987 发表于 2012-9-13 01:54
???QUESTION 39
A raw data file is listed below:

----|----10---|----20---|----30


input name $ age height;

list input中每一行的第一个词会赋值给变量name，也就是John, June, 和TinekeJones；而且根据name的长度有的值会被截断。
每一行的接下来读入的值会赋给age，即McCloskey, Rosesette, 和9. 因此前两行age的值会是空值（字符到数值的自动转换。）
height的值分别为35，10，和37

pobel 发表于 2012-9-13 08:26
input name $ age height;

list input中每一行的第一个词会赋值给变量name，也就是John, June, 和 ...

谢谢哦！请问能解答下第59题吗？

Yvonnej1987 发表于 2012-9-13 01:56
QUESTION 59
The following SAS program is submitted:

data work.staff;

JobCatego ...

||是连接符，将左右两个字符串连接起来。
这个题应该考察的是字符型变量的长度。字符型变量的长度在DATA步中第一次出现这个变量时决定。
此处jobcategory='FA'; 决定了这个变量长度是2。所以后边尝试将更长的字符串赋值给这个变量时，超出的部分就被截掉了。