Statistics › Section L · Linear regression and correlation › Topic L.5
Predicting with a regression equation
Fitting the line was preparation; using it is the point. But prediction comes in two kinds - the average outcome at some x, or one particular individual's - and they carry very different uncertainties. Naming which question you are answering is the skill.
In this topic
- The point prediction
- Two different questions
- Why the widths differ
- Worked example: an individual house
- Worked example: the average at that size
- Precision depends on where you ask
- Prediction hygiene
- Common mistakes to avoid
- Key takeaways
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