Lesson 14 of 20 · about 16 min
The normal distribution
The bell curve shows up in test scores, measurement errors and the Galton board. You'll shade areas under it to discover the 68–95–99.7 rule, turn any value into a z-score that says "how unusual is this?", and use Python's NormalDist to answer real questions, including how well the bell curve approximates coin flips.
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In this lesson you'll learn:
- Normal distribution N(μ, σ²)
- z-score
Free to try in F07 Probability & Statistics:
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