Seriously though, don’t do violence.
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Without 25 observations at least we cannot draw conclusions
Depends on your dataset, confidence, and margin of error.
Assuming that 95% of billionaires will act similarly and 750-ish total billionaires in the US, if you want to have 99% confidence and 1% margin of error, you’ll need a minimum sample size of around 600.
We really should be thorough. For science.
Usually I would nit pick the hypothesis you want to confirm and the math you used, but for some reason 600 sounds right.
