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Monday, January 25, 2010

Base 48

The contents of the raw data file FURNITURE are listed below:

--------10-------20-------30
chair,,table
chair,couch,table

The following SAS program is submitted:


data stock;
infile 'furniture' dsd;
input item1 $ item2 $ item3 $;
run;


Which one of the following is the value of the variable named ITEM2 in the first observation of the output data set?
A. table
B. ,table
C. . (missing numeric value)
D. ' ' (missing character value)

5 comments:

SASGuru said...

Answer D
Item2 is defined as character and the dsd option will assign missing value to it as there are two commas.

V.V. said...

In the following program, the answer is D. This is
because, you are using a 'dsd' condition
at the end of infile. The 'dsd' allows the SAS
to read consecutive commas which have no space
between them.

data stock;
infile cards dsd;
input item1 $ item2 $ item3 $;
cards;
chair,,table
chair,couch,table
;
run;

However if a dlm=',' is used then the result is
Chair Table Chair. The comma is not accepted. Only
observations is obtained.

If there is a gap between the commas in the first
observation, then you can use dsd or dlm to give
you answer- D.

shalini said...

yes the answer is D as dsd option is used. Also, Item2 is a character variable.

neuro_sas said...

D
A BLANK SPACE FOR MISSING CHARACTER VALUE
A(.) PERIOD FOR MISSING NUMERIC

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