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Wednesday, January 27, 2010

Q23

The following SAS program is submitted:
data work.passengers;
if OrigPassengers = . then OrigPassengers = 100;
TransPassengers = 100;
OrigPassengers = .;
NonPaying = 10;
TotalPassengers = OrigPassengers + TransPassengers;
run;

Which one of the following is the value of the TOTALPASSENGERS variable in the output data set?

A. 100
B. 110
C. 200
D. . (missing numeric value)

12 comments:

SASGuru said...

Answer: D

In an assignment statement, if one of the values is missing then the value assigned to is set to missin

Ankur said...

wat is the significance of if statement in the function above?

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

D. . (missing numeric value)

siva said...

Answer is D

Subbu said...

@ankur: During the 1st occurance of OrigPassengers, It will set the value to 100 for every missing value. during it's second occurance, all those value will be overwritten by '.'

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Ryan Lo said...

Answer is D.

In a mathematical expression (using arithmetic operators), if one of the operand's values is missing then the value of result is set to missing.

When you use a missing value in an arithmetic expression, SAS sets the result of the expression to missing. If you use that result in another expression, the next result is also missing. In SAS, this method of treating missing values is called propagation of missing values.

kinnari said...

D

As here we are given assignment stmt
and if any value is missing in assignment stmt then the answer which we get is missing

Stevina Rumao said...

Ans D

H. C. said...

D

H. C. said...

D

Harsh Mohan said...

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