SAS基础薄弱，刚刚91%在北美考过了SAS BASE

考前只看过70题，根据经验来看，只是为了考证的话只看70题真的就够了，选项顺序会变，当然如果能结合crackman的网站看就更好了，有有助于理解记忆

我是在考前把网上的版本答案删掉，打印出来反复做的模拟题，但是考试的时候还是答错了一道原题，所以70题一定要反复看（70题无答案模考版免费分享给大家，其中添加了以前没有的第9题）

SAS base 70题 无答案版.doc
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考试题目有62道单选两道填空（填数字）

下面分享一些我遇到的题目：
一，70题两道答案更正

29.The following SAS program issumbitted:

data WORK.INFO;

     infile'DATAFILE.TXT';

     input @1 Company 20.@25State2.@;

     if State=' ' theninput @30 Year;

     else input @30City Year;

     inputNumEmployees;

run;

How many raw data records areread duringeach iteration of the DATA step?

     A. 1

     B. 2

     C. 3

     D. 4

原始答案A, 正确答案是B.

45.The following SAS program issubmitted:

ods csvall file='c:\test.cvs';

proc print data=WORK.ONE;

     var Name ScoreGrade;

     by IdNumber;

run;

ods csvall close;

What is produced as output?

     A. A file namedtest.cvs that can only beopened in Excel.

     B. A text filenamed test.cvs that can beopened in Excel or in any text editor.

     C. A text filenamed test.cvs that canonly be opened in a text editor.

     D. A file namedtest.cvs that can only beopened by SAS.

原始答案C, 正确答案B

二，考到70题文件中缺少的一道题（crackman网站上有）

9. data course;
input exam;
datalines;
50.1
;
run;

proc format;
value score 1 – 50 = ‘Fail’
            51 – 100 =‘Pass’;
run;

proc report data =course nowd;
column exam;
define exam / display format=score.;
run;

What is the value for exam?
A. Fail
B. Pass
C. 50.1
D. No output

正确答案： C

三，70题的变形

原题为：

44. The following SAS program is submitted:
   data ONE TWO SASUSER.TWO
     set SASUSER.ONE;
  run;
Assuming that SASUSER.ONE exists, how many temporary and

permanent SAS data sets are created?
      A. 2 temporary and 1 permanent SAS data sets are

created
     B. 3 temporary and 2 permanent SAS data sets arecreated
     C. 2 temporary and 2 permanent SAS data sets arecreated
     D. there is an error and no new data sets are created
Answer: D

考试题目为

The following SAS program is

submitted:
   data ONE TWO SASUSER.TWO；
     set SASUSER.ONE;
  run;
答案是A

四，70题没有包括的题目：

1, 问variable length是多少？
先给出num length是10, 然后在data step中设length是15, 再用format把variable变成length 20, 问variable length是多少？

这里要区分format概念和length概念，format不改变其length。

work. one
two
_two
2_two

注意libref is 1 to 8 characters long, beginswith a letter or underscore, and contains only letters, numbers, orunderscores.