Q172
Which of the following R code can be used to avoid numeric problems such as taking the logarithm of a negative number?
A.
if( any(x < 0) ) y <- log(1+x) else y <- log(x)
B.
if( any(x <= 0) ) y <- log(1+x) else y <- log(x)
AnswerC.
if( any(x >= 0) ) y <- log(1+x) else y <- log(x)
D.
if( any(x >> 0) ) x >- log(1+x) else x <- log(x)
Answer: Option B
Solution
Answer: Option B
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