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WHAT IS LAG FUNCTION ? WHERE CAN YOU IMPLEMENT THIS
FUNCTION?
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Answer / zyin2
Lag() function returns the value of the first previous
observation in a time series. It could be used in Auto
Regression analysis for time series.
For example, Let y be the cloumn name for the original time
series, the analysis for AR(2) could be:
data test;
set test;
m = lag(y);
n = lag(m);
run;
proc reg data = test;
model y = m n;
run;
| Is This Answer Correct ? | 10 Yes | 1 No |
Answer / sai
Lag function can be used if you want to perform
computations across the observations.
| Is This Answer Correct ? | 0 Yes | 0 No |
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