Case files

Case 01: The Screen-Time Case
Ten answers, one chart, and one number that changes the whole story.
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Case 02: Charts That Lie
Same numbers, three different stories. One of the charts is cheating. Catch it.
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Case 03: Does Money Buy Happiness?
Each dot is a country, not a person. So what can this chart really tell you?
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Case 04: Correlation Isn't Guilty
Ice cream and sunburns rise together. So ban ice cream? Or is something else going on?
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Case 05: The Biased Sample
My friends say 16.6 hours. The truth is 11.0. Why asking only your friends gives the wrong answer.
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Case 06: The Missing Data Mystery
Almost half the answers are blank. Where did those people go?
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Case 07: Fix the Messy Dataset
Two bars, both labelled Bus. The sheet thinks they are different things. Can you trust this file?
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Case 08: Finale: Build Your Own Case
Stop watching, start investigating. Pick a question, collect real data, and write a one-page case file.
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Case 09: Teach a Machine
This computer has never seen a mug. Teach it in five minutes, then find out why that does not mean it understands.
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