One document into reels

A chef never eats the whole pot to know if the soup is salty.

Mix these two up and you lose points. Every single test.

Four ways to pick a sample. The test will ask you to name one.

The 1936 poll that predicted the wrong president, by two million ballots.

Why online polls are basically useless, and how to say it on the test.

Only one of these can ever prove cause and effect.

No control group? Then you can't trust the result. Here's why.

Sugar pills cure people. That's exactly the problem.

Ice cream doesn't cause shark attacks. Something else does both.

The exact words graders look for on sampling questions.