SAS-base-考试必备-70真题(附答案).doc

1.The following SAS program is submitted:

data WORK.TOTAL;
set WORK.SALARY;
by Department Gender;
if First.<_insert_code_> then Payroll=0;
Payroll+Wagerate;
if Last.<_insert_code_>;
run;

The SAS data set WORK.SALARY is currently ordered by Gender within Department.
Which inserted code will accumulate subtotals for each Gender within Department?
A. Gender
B. Department
C. Gender Department
D. Department Gender

Answer: A
-------------------------------------
2.Given the following raw data records in TEXTFILE.TXT:

----|----10---|----20---|----30
John,FEB,13,25,14,27,Final
John,MAR,26,17,29,11,23,Current
Tina,FEB,15,18,12,13,Final
Tina,MAR,29,14,19,27,20,Current

The following output is desired:

Obs Name Month Status Week1 Week2 Week3 Week4 Week5

1 John FEB Final $13 $25 $14 $27 .
2 John MAR Current $26 $17 $29 $11 $23
3 Tina FEB Final $15 $18 $12 $13 .
4 Tina MAR Current $29 $14 $19 $27 $20

Which SAS program correctly produces the desired output?

A.
data WORK.NUMBERS;
length Name $ 4 Month $ 3 Status $ 7;
infile 'TEXTFILE.TXT' dsd;
input Name $ Month $;
if Month='FEB' then input Week1 Week2 Week3 Week4 Status $;
else if Month='MAR' then input Week1 Week2 Week3 Week4 Week5 Status $;
format Week1-Week5 dollar6.;
run;
proc print data=WORK.NUMBERS;
run;

B.
data WORK.NUMBERS;
length Name $ 4 Month $ 3 Status $ 7;
infile 'TEXTFILE.TXT' dlm=',' missover;
input Name $ Month $;
if Month='FEB' then input Week1 Week2 Week3 Week4 Status $;
else if Month='MAR' then input Week1 Week2 Week3 Week4 Week5 Status $;
format Week1-Week5 dollar6.;
run;
proc print data=WORK.NUMBERS;
run;

C.
data WORK.NUMBERS;
length Name $ 4 Month $ 3 Status $ 7;
infile 'TEXTFILE.TXT' dlm=',';
input Name $ Month $ @;
if Month='FEB' then input Week1 Week2 Week3 Week4 Status $;
else if Month='MAR' then input Week1 Week2 Week3 Week4 Week5 Status $;
format Week1-Week5 dollar6.;
run;
proc print data=WORK.NUMBERS;
run;

D.
data WORK.NUMBERS;
length Name $ 4 Month $ 3 Status $ 7;
infile 'TEXTFILE.TXT' dsd @;
input Name $ Month $;
if Month='FEB' then input Week1 Week2 Week3 Week4 Status $;
else if Month='MAR' then input Week1 Week2 Week3 Week4 Week5 Status $;
format Week1-Week5 dollar6.;
run;
proc print data=WORK.NUMBERS;
run;

Answer: C
-------------------------------------
3.The Excel workbook REGIONS.XLS contains the following four worksheets:
EAST
WEST
NORTH
SOUTH

The following program is submitted:

libname MYXLS 'regions.xls';

Which PROC PRINT step correctly displays the NORTH worksheet?
A. proc print data=MYXLS.NORTH;run;
B. proc print data=MYXLS.NORTH$;run;
C. proc print data=MYXLS.'NORTH'e;run;
D. proc print data=MYXLS.'NORTH$'n;run;

Answer: D
-------------------------------------
4.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?
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.

Answer: A
-------------------------------------
5.Which statement specifies that records 1 through 10 are to be read from the raw data file customer.txt?

A. infile 'customer.txt' 1-10;
B. input 'customer.txt' stop@10;
C. infile 'customer.txt' obs=10;
D. input 'customer.txt' stop=10;

Answer: C
-------------------------------------
6.After a SAS program is submitted, the following is written to the SAS log:

101 data WORK.JANUARY;
102 set WORK.ALLYEAR(keep=product month num_Sold Cost);
103 if Month='Jan' then output WORK.JANUARY;
104 Sales=Cost * Num_Sold;
105 keep=Product Sales;
-----
22
ERROR 22-322: Syntax error, expecting one of the following: !,!!, &, *, **, +, -, , <=, <>, =, >, >=,
AND, EQ, GE, GT, IN, LE, LT, MAX, MIN, NE, NG, NL,NOTIN, OR, ^=, |, ||, ~=.
106 run;

What changes should be made to the KEEP statement to correct the errors in the LOG?

A. keep=(Product Sales);
B. keep Product, Sales;
C. keep=Product, Sales;
D. keep Product Sales;

Answer: D
-------------------------------------

7.Which of the following choices is an unacceptable ODS destination for producing output that can be viewed in Microsoft Excel?

A. MSOFFICE2K
B. EXCELXP
C. CSVALL
D. WINXP

Answer: D
-------------------------------------

8.The SAS data set named WORK.SALARY contains 10 observations for each department,and is currently ordered by Department. The following SAS program is submitted:

data WORK.TOTAL;
set WORK.SALARY(keep=Department MonthlyWageRate);
by Department;
if First.Department=1 then Payroll=0;
Payroll+(MonthlyWageRate*12);
if Last.Department=1;
run;

Which statement is true?
A. The by statement in the DATA step causes a syntax error.
B. The statement Payroll+(MonthlyWageRate*12); in the data step causes a syntax error.
C. The values of the variable Payroll represent the monthly total for each department in the WORK.SALARY data set.
D. The values of the variable Payroll represent a monthly total for all values of WAGERATE in the WORK.SALARY data set.

Answer: C
-------------------------------------

10.The following SAS program is submitted:

data WORK.RETAIL;
Cost='$20,000';
Discount=.10*Cost;
run;

What is the result?

A. The value of the variable Discount in the output data set is 2000.No messages are written to the SAS log.
B. The value of the variable Discount in the output data set is 2000.A note that conversion has taken place is written to the SAS log.
C. The value of the variable Discount in the output data set is missing. A note in the SAS log refers to invalid numeric data.
D. The variable Discount in the output data set is set to zero.No messages are written to the SAS log.

Answer: C 因为有一个$符号
-------------------------------------

11.Given the existing SAS program:

proc format;
value agegrp
low-12 ='Pre-Teen'
13-high = 'Teen';
run;

proc means data=SASHELP.CLASS;
var Height;
class Sex Age;
format Age agegrp.;
run;

Which statement in the proc means step needs to be modified or added to generate the following results:

Analysis Variable : Height

N
Sex Age Obs Minimum Maximum Mean
------------------------------------------------------------------
F Pre-Teen 3 51.3 59.8 55.8

Teen 6 56.5 66.5 63.0

M Pre-Teen 4 57.3 64.8 59.7

Teen 6 62.5 72.0 66.8
--------------------------------------------------------------------

A. var Height / nobs min max mean maxdec=1;
B. proc means data=SASHELP.CLASS maxdec=1 ;
C. proc means data=SASHELP.CLASS min max mean maxdec=1;
D. output nobs min max mean maxdec=1;

Answer: C
-------------------------------------

12.The Excel workbook QTR1.XLS contains the following three worksheets:
JAN
FEB
MAR
Which statement correctly assigns a library reference to the Excel workbook?
A. libname qtrdata 'qtr1.xls';
B. libname 'qtr1.xls' sheets=3;
C. libname jan feb mar 'qtr1.xls';
D. libname mydata 'qtr1.xls' WORK.heets=(jan,feb,mar);

Answer: A
-------------------------------------

13.The following SAS program is submitted:

data WORK.TEST;
set WORK.MEASLES(keep=Janpt Febpt Marpt);
array Diff{3} Difcount1-Difcount3;
array Patients{3} Janpt Febpt Marpt;
run;

What new variables are created?
A. Difcount1, Difcount2 and Difcount3
B. Diff1, Diff2 and Diff3
C. Janpt, Febpt, and Marpt
D. Patients1, Patients2 and Patients3

Answer: A
-------------------------------------

14.Which of the following programs correctly invokes the DATA Step Debugger:
A.
data WORK.TEST debug;
set WORK.PILOTS;
State=scan(cityState,2,' ');
if State='NE' then description='Central';
run;

B.
data WORK.TEST debugger;
set WORK.PILOTS;
State=scan(cityState,2,' ');
if State='NE' then description='Central';
run;

C.
data WORK.TEST / debug;
set WORK.PILOTS;
State=scan(cityState,2,' ');
if State='NE' then description='Central';
run;

D.
data WORK.TEST / debugger;
set WORK.PILOTS;
State=scan(cityState,2,' ');
if State='NE' then description='Central';
run;

Answer: c
-------------------------------------

15.Which statement is true concerning the SAS automatic variable _ERROR_?

A. It cannot be used in an if/then condition.
B. It cannot be used in an assignment statement.
C. It can be put into a keep statement or keep= option.
D. It is automatically dropped.

Answer: D
-------------------------------------

16.The following SAS program is submitted:

data WORK.DATE_INFO;
X='04jul2005'd;
DayOfMonth=day(x);
MonthOfYear=month(x);
Year=year(x);
run;

What types of variables are DayOfMonth, MonthOfYear, and Year?

A. DayOfMonth, Year, and MonthOfYear are character.
B. DayOfMonth, Year, and MonthOfYear are numeric.
C. DayOfMonth and Year are numeric. MonthOfYear is character.
D. DayOfMonth, Year, and MonthOfYear are date values.

Answer: B
-------------------------------------

17.Given the following data step:

data WORK.GEO;
infile datalines;
input City $20.;
if City='Tulsa' then
State='OK';
Region='Central';
if City='Los Angeles' then
State='CA';
Region='Western';
datalines;
Tulsa
Los Angeles
Bangor
;
run;

After data step execution, what will data set WORK.GEO contain?

A.
City State Region
----------- ----- -------
Tulsa OK Western
Los Angeles CA Western
Bangor Western

B.
City State Region
----------- ----- -------
Tulsa OK Western
Los Angeles CA Western
Bangor

C.
City State Region
----------- ----- -------
Tulsa OK Central
Los Angeles CA Western
Bangor Western

D.
City State Region
----------- ----- -------
Tulsa OK Central
Los CA Western
Bangor

Answer: A
-------------------------------------

18.Which statement describes a characteristic of the SAS automatic variable _ERROR_?

A. The _ERROR_ variable maintains a count of the number of data errors in a DATA step.
B. The _ERROR_ variable is added to the program data vector and becomes part of the data set being created.
C. The _ERROR_ variable can be used in expressions in the DATA step.
D. The _ERROR_ variable contains the number of the observation that caused the data error.

Answer: C
-------------------------------------

19.The SAS data set WORK.ONE contains a numeric variable named Num and a character variable named Char:

WORK.ONE

Num Char
--- ----
1 23
3 23
1 77

The following SAS program is submitted:

proc print data=WORK.ONE;
where Num='1';
run;

What is output?

A.
Num Char
--- ----
1 23

B.
Num Char
--- ----
1 23
1 77

C.
Num Char
--- ----
1 23
3 23
1 77

D. No output is generated.

Answer: D
-------------------------------------

20. The data set WORK.REALESTATE has the variable LocalFee with a format of 9. and a variable CountryFee with a format of 7.;

The following SAS program is submitted:

data WORK.FEE_STRUCTURE;
format LocalFee CountryFee percent7.2;
set WORK.REALESTAT;
LocalFee=LocalFee/100;
CountryFee=CountryFee/100;
run;

What are the formats of the variables LOCALFEE and COUNTRYFEE in the output dataset?
A. LocalFee has format of 9. and CountryFee has a format of 7.
B. LocalFee has format of 9. and CountryFee has a format of percent7.2
C. Both LocalFee and CountryFee have a format of percent7.2
D. The data step fails execution; there is no format for LocalFee.

Answer: C
-------------------------------------

21.Given the SAS data set WORK.PRODUCTS:

ProdId Price ProductType Sales Returns
------ ----- ----------- ----- -------
K12S 95.50 OUTDOOR 15 2
B132S 2.99 CLOTHING 300 10
R18KY2 51.99 EQUIPMENT 25 5
3KL8BY 6.39 OUTDOOR 125 15
DY65DW 5.60 OUTDOOR 45 5
DGTY23 34.55 EQUIPMENT 67 2

The following SAS program is submitted:

data WORK.OUTDOOR WORK.CLOTH WORK.EQUIP;
set WORK.PRODUCTS;
if Sales GT 30;
if ProductType EQ 'OUTDOOR' then output WORK.OUTDOOR;
else if ProductType EQ 'CLOTHING' then output WORK.CLOTH;
else if ProductType EQ 'EQUIPMENT' then output WORK.EQUIP;
run;

How many observations does the WORK.OUTDOOR data set contain?
A. 1
B. 2
C. 3
D. 6

Answer: B
-------------------------------------

22.Which step displays a listing of all the data sets in the WORK library?
A. proc contents lib=WORK run;
B. proc contents lib=WORK.all;run;
C. proc contents data=WORK._all_; run;
D. proc contents data=WORK _ALL_; run;

Answer: c
-------------------------------------

23.Which is a valid LIBNAME statement?
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_";

Answer: C
-------------------------------------

24.Given the following raw data records:

----|----10--