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Wednesday, January 27, 2010

Q3

A raw data file is listed below:

--------10-------20-------30
John McCloskey 35 71
June Rosesette 10 43
Tineke Jones 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.

15 comments:

SASGuru said...

Answer: C
This is a tricky question…
The values for name have embedded blanks and also no length statement…so the values assigned for age is . (missing) for all obs. And also . (missing) is always le 10. Therefore the output dataset has 3 obs.
data banks;
input name $ age height;
if age LE 10;
cards;
John McCloskey 35 71
June Rosesette 10 43
Tineke Jones 9 37
;
run;

Rujuta........ said...

C. 3

V.V. said...

To get the correct answer

data new;
infile datalines;
input name & $ age hieght;
if age le 10;
datalines;
John McCloskey 35 71
June Rosesette 10 43
Tineke Jones 9 37
;
run;

Two blanks between name and age...

siva said...

Answer C

hemanth said...

if we specifies name variable length as 14 what will happen

Ryan Lo said...

Answer is C.

Please see SASGuru's comment.

All the length of variables is 8, by default.

Gaurav said...

C

Atif Momin said...

answer is B

Altamash Ansari said...

Atif, Can you please explain why B?

Unknown said...

but the program after execution only gives one observation as output unless missover is included .

data new;
infile datalines;
input name & $ age height;
if age le 10;
datalines;
John McCloskey 35 71
June Rosesette 10 43
Tineke Jones 9 37
;
run;
proc print;
run;

Sridhar Panthangi said...

Answer D, because name variable's length is not defined, it is having space between name string

Sridhar Panthangi said...

dataset will be created but not complete, it is with error

Anonymous said...

I agree with Syed Zakr, this only gives one observation with missing data for both age and height.
the following error in the log.
NOTE: Invalid data for age in line 63 1-4.
NOTE: Invalid data for hieght in line 63 6-14.

NewSASer said...

The following script provides correct answer:

data banks;
input name $15. @16 age height;
if age LE 10;
cards;
John McCloskey 35 71
June Rosesette 10 43
Tineke Jones 9 37
;
run;

Bharanitharan said...

Ans:C

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