I am using the phbirths data in the faraway package in R. I want to: 1)...

I am using the phbirths data in the faraway package in R.

I want to:

1) create a plot of the birth weight vs the gestational age and I want to colour code the points based on the mothers smoking status to determine whether or not smoking affects the babies.

2) fit a simple model (one regression line) along with both the main effects (parallel lines) and interaction (non parallel lines) ANCOVA model to the data and find out which model is preferred.

what coding would I use for both of these questions? please help, will thumbs up! ?

Thanks.

Expert Solution

milcah answered 1 year ago

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