Statistics › Section F · The normal distribution › Topic F.1
The standard normal distribution
Heights cluster symmetrically around an average, measurement errors wander around the truth, test scores pile into a bell. The normal distribution is the curve behind all of them - and one standardised version of it serves every problem, whatever the units.
In this topic
- The most famous curve
- The normal curve
- One table for every normal
- Standardising
- Reading standard-normal areas
- The 68-95-99.7 rule
- Worked example: reading the standard-normal table
- Worked example: symmetry in action
- Common mistakes to avoid
- Key takeaways
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