문제풀이/기타
SAS BASE Q20. if & pdv / Q4, Q15와 비교
나루다루
2018. 3. 1. 21:50
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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
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