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by mjac 4026 days ago
Yes, you are exactly right about the original source data. However, Strength Level has been around since 2007 and we use 500k+ user lifts to refine the estimations.
1 comments

Wouldn't that give you big selection bias?
Yes, so we have to say you are better than 75% of other users instead of 75% of humans. Do you have any advice in this area?