Type I vs Type II Errors: False Alarms and Missed Signals
Hypothesis testing · Decisions under uncertainty Every test you have ever trusted can be wrong in exactly two ways. It can shout when nothing is happening, or it can stay…
Range, IQR and Quartiles Explained
Descriptive statistics · Spread · Box plots Two classes can share the same average and the same highest and lowest scores, and still be completely different places to teach. One…
Bertrand’s Box Paradox: Why “It’s Obviously 50/50” Is Wrong
Probability puzzles · Bayes · Everyday reasoning Three boxes. Six coins. You reach into one at random and pull out gold. What is the chance the other coin in that…
Binomial Distribution Explained with Coin Flips and Quality Control
Statistics · Probability · Real examples HTHHTH Flip a fair coin ten times. How many heads should you get? Five, obviously. But how often do you really get exactly five?…
What Is a Probability Distribution?
Learn With Examples · Probability & Statistics Nobody can tell you how many minutes your food delivery will take. But a good app can tell you something better: how likely…