[R] Transformations

[David Winsemius]

On Nov 20, 2011, at 11:16 AM, d.s91 wrote:

> Hi, I'm having some trouble with R code for one of my assignment  
> questions on
> transforms. I've never used R for transformations so I'm not sure  
> where to
> being. Our prof did give us some partial R code.par(mfrow=c(2,2))
> plot(X[,2],e)
> plot(X[,3],e)
> plot(X[,4],e)
> plot(X[,5],e)
>
> Any help ??
> 3. Try the following transformations on the response variable:
> (a) ˜ y = ey
> (b) ˜ y = log(y)
> (c) ˜ y = 1/y
> (d) ˜ y = 1/y2
> (e) ˜ y = 1/√y
> Carry out the regression ˜ y = β0 + β1 x1 + β2 x2 + β3 x3 + β4  
> x4 + ϵ for
> each case,
> including the residual analysis
>

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-- 

David Winsemius, MD
West Hartford, CT