Foundation · Market sizing
Market sizing and estimation
How to estimate a number when you have almost no data: define it first, then build it top-down or bottom-up, choose assumptions you can defend, and cross-check from a second direction.
10 min1 lesson Last reviewed
Start the lesson Estimating anything from almost nothing
Key takeaways
- Segment only where groups behave very differently.
- Define exactly what you are estimating before you start.
- Estimate top-down (from demand) and bottom-up (from a single unit)
- Cross-check an estimate from the supply side.
- Use a small set of anchor numbers for the main regions.
By the end you will be able to
- Define exactly what you are estimating before you start
- Estimate top-down (from demand) and bottom-up (from a single unit)
- Cross-check an estimate from the supply side
- Use a small set of anchor numbers for the main regions
Worked cases in this module
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Key terms