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Update transform.Rmd (#191) 

typo
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S'busiso Mkhondwane 2016-07-25 22:00:36 +02:00 committed by Hadley Wickham
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@ -389,7 +389,7 @@ There are many functions for creating new variables that you can use with `mutat
feature we'll come back to in modelling. feature we'll come back to in modelling.
All else being equal, I recommend using `log2()` because it's easy to All else being equal, I recommend using `log2()` because it's easy to
interpret: an difference of 1 on the log scale corresponds to doubling on interpret: a difference of 1 on the log scale corresponds to doubling on
the original scale and a difference of -1 corresponds to halving. the original scale and a difference of -1 corresponds to halving.
* Offsets: `lead()` and `lag()` allow you to refer to leading or lagging * Offsets: `lead()` and `lag()` allow you to refer to leading or lagging