hi all,
after fitting a multiple linear regression
model <- lm(y ~ a + b+ c+d)
i wanted to plot diagnostics
plot(model)
but get the error message
Error in object$coefficients : $ operator is invalid for atomic vectors.
which does not make a lot of sense, since there is no "$" - i am working with an attached dataset.
can anyone help, please??
thanks a lot,
kat

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