This doesn't make sense to me. Why does the regression line have its own variable?
I understand the trend without the addition of variable A: that staying out of trouble means more money for Phelps, and that less money is made when trouble increases.
If you wanted to graph the interaction of 3 separate variables, you would need a 3-dimensional chart. Or you could graph Free Time vs. Income, and Free Time vs. Trouble in two separate graphs.
Brilliant!!!
ReplyDeleteThis doesn't make sense to me. Why does the regression line have its own variable?
ReplyDeleteI understand the trend without the addition of variable A: that staying out of trouble means more money for Phelps, and that less money is made when trouble increases.
If you wanted to graph the interaction of 3 separate variables, you would need a 3-dimensional chart. Or you could graph Free Time vs. Income, and Free Time vs. Trouble in two separate graphs.
Send me one and I will post it. :-)
ReplyDeleteI always say that my readers are smarter than i am, hence, I feel so stupid; so to get it right, I gotta redo this graph tomorrow.
ReplyDelete