SAS BASE Q20. if & pdv / Q4, Q15와 비교

QUESTION NO: 20

Given the SAS data set PRICES: PRICES

Prodid price producttype sales returns

K125 5.10 NETWORK 15 2

B132S 2.34 HARDWARE 300 10

R18KY2 1.29 SOFTWARE 25 5

3KL8BY 6.37 HARDWARE 125 15

DY65DW 5.60 HARDWARE 45 5

DGTY23 4.55 HARDWARE 67 2

 

The following SAS program is submitted:

 

data hware inter cheap;

set prices(keep = producttype price);

if producttype = 'HARDWARE' then output hware;

else if producttype = 'NETWORK' then output inter;

if price le 5.00;

run;

 

How many observations does the HWARE data set contain?

 

A. 0

B. 2

C. 3

D. 4

 

 

Answer: D

# 문제 풀이

 - pdv(program data vector) 개념이 중요한데 자세한 건 https://www.youtube.com/watch?v=hBJaIVlljHE 참조