Hello,

I have to admit my studio plotting skills are a bit weak, and I've come upon (what I think is) a fairly simple task I can't seem to solve. I am not sure how to exactly word this in a way to google this either, although I think it isn't too complicated:

basically, I have one variable, the hours of sport a person does per day, and I want to plot this in relation to age of the respondents, i.e. I want to graph a singular line with mean hours of sport on the y-axis and the age of the individuals on the x axis. I can't seem to figure this out without calculating the mean for each year group.

I know this probably isn't that tough, but I would greatly appreciate help with this. Thanks!