Like x and y in algebra, explanatory and response variables are the yin and the yang of studies in statistics.
Confounding & Lurking Variables
"Confounding" and "lurking" are the words statistics people use to say "oops". As in, "oops, I didn't account for that variable." Stay tuned for a couple examples and the one tried and tested way to avoid these "oops" in your own experiments. (You're doing experiments, right?)
If you do not have an account, you should get one, because it is awesome! You can save a playlist for each test or each chapter, and save your "greatest hits" into a "watch right before the final" list (not that we recommend cramming, but when in Rome...)