Canadians Have Lower Depression Rates Than Americans?

When scientists say something is true, what's the basis for that claim? Well, obviously it comes from the data. What we do is we always start with the notion that this has happened by chance,. or that perhaps a result as due to other factors. So one of the ways we protect against this is by sampling randomly. Typically, we want to pick random people from the population. We don't want to be biased. And once you've got that hypothesis, you're ready to go. You just go out and collect your data. Now, results, this is the key part, i guess.