[R] Plot residuals against standard normal distribution

[Mikael Olai Milhøj]

Hi,

I'm having trouble trying to plot the density of the residuals against the
standard normal distribution N(0,1). (I'm trying to see if my residuals are
well-behaved).

I know hwo to calculate the standardized residuals (I guess that there may
be a simple way using a R function) and then plot this by using the density
function

y<-(model$residuals-mean(model$residuals))/sd(model$residuals)
plot(density(y))

But I don't know how to add the N(0,1) curve. Any suggestions? Thanks in
advance


/Mikael

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