Statistics › Section F · The normal distribution › Topic F.2
Using the normal distribution
Nobody measures a child's height in z-scores. Real quantities come with real units, their own mean and SD - and a three-step pipeline connects them to the standard-normal table, in both directions.
In this topic
- Real normals, real units
- The recipe
- Worked example: IQ scores
- Worked example: between two heights
- Working backwards: from area to value
- Worked example: the top 10% of IQ
- Worked example: a bakery's tallest loaves
- Checking that the data are normal
- Why the normal is everywhere
- Common mistakes to avoid
- Key takeaways
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