I'm working on a combination graph with two y-axes and have calculated the R2 value which included data from both y-axes data sets. I can't seem to add a trendline/ R2 value that incorporates both sets of data. Is this possible?
I'm working on a combination graph with two y-axes and have calculated the R2 value which included data from both y-axes data sets. I can't seem to add a trendline/ R2 value that incorporates both sets of data. Is this possible?