So, I have my poisson regression model: (mvdiff = market value diff, participations = participations in world cup)
mod <- glm(goals~participations+MVdiff, family = poisson) plot(MVdiff, jitter(goals , 0.2), pch=17)
Now I would like to include a regression function line into my plot: as a function of MVdiff, with the value of 9.2 for participations (as in 9.2 is the mean of the participations in the world cup).
Here my try:
But this doesn’t quite work out. Is there a way to properly add the value of 9.2 into my coefficient variable participation?