With public universal health care, without public universal health care… it does not matter.
It matters enormously. Literally the difference between surviving and not surviving.
You know, the thing you’re measuring for.
But if someone doesn’t even understand the two-variable model, we should make sure they understand THAT model before we add even more stuff that they don’t understand.
Not for the purpose of establishing whether there is a negative correlation between smoking and life expectancy.
Also that comic is saying that adding a third variable does not always make the model better. Also p-hacking is a thing. It’s the opposite of what you’re trying to establish, which is the existence of a third variable which improves the model. And once again, I will say that if you find two correlated variables confusing, adding a third variable is NOT going to help you.
It matters enormously. Literally the difference between surviving and not surviving.
You know, the thing you’re measuring for.
Not for the purpose of establishing whether there is a negative correlation between smoking and life expectancy.
Also that comic is saying that adding a third variable does not always make the model better. Also p-hacking is a thing. It’s the opposite of what you’re trying to establish, which is the existence of a third variable which improves the model. And once again, I will say that if you find two correlated variables confusing, adding a third variable is NOT going to help you.