Bart, I apologize. I posted the code I was using in my first comment, to include the error and the plot that is coming up. I was unaware that was not enough. I am not looking for anyone to give me the actual answer to my specific issue, only looking to be pointed in a direction for an online guide that i can read to understand how average effects are plotted in R. Our text book doesn't cover any topics for using R, only theory.
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