@sideways_lamp16 minutes ago
The implied spend per customer check is way easier than guessing the whole market.
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@AnalogAndMoss243 hours agoUnited States
How should I sanity-check a market sizing answer when I have no benchmark?
- Market Sizing
I understand that I should sanity-check the final market size, but sometimes I have no idea what the real market should be. How do I test whether the answer is reasonable without an external benchmark?
Similar Questions
How should I handle seasonality in a market sizing case?
- Market Sizing
I understand basic market sizing, but seasonality throws me off. If demand is much higher in some months than others, how should I incorporate that without making the calculation unnecessarily complicated?
Oct 19, 2026United States
Top answer
Mayank G.Coach
Mayank G.CoachUse seasonality only when it materially changes demand. The simplest method is usually to calculate a normal period and then adjust for high and low seasons.
When should I segment a market by age, income, or customer type?
- Market Sizing
When doing a market sizing case, how do I know whether I should segment by age, income, customer type, or not segment at all? I sometimes add segments just because I think the structure needs them.
Oct 19, 2026United States
Top answerMayank G.Coach
Mayank G.CoachSegment only when different groups behave differently enough to change the estimate. Segmentation should improve the model, not decorate the structure.
How should I handle a market sizing case when I know a real-world number?
- Market Sizing
Sometimes I happen to know an actual market statistic from school or work. Should I use that number, or is it better to build an estimate from assumptions so the interviewer can see my reasoning?
Oct 16, 2026United States
Top answerMayank G.Coach
Mayank G.CoachYou can use a real-world number if you are confident it is accurate and relevant, but do not let outside knowledge replace the reasoning the interviewer wants to see.