Common mistake
Believing one person can barely move an average
It sounds like this
He's only one person out of hundreds, so his pay can't shift the average by much.
Why it’s wrong
The mean adds up amounts, not heads: an amount a hundred times bigger than the rest counts a hundred times over.
The lesson that fixes it
Cognosc spots mistakes like this.
When you explain something in your own words, Cognosc can tell exactly which mistake you’re making — not just that you’re wrong — and gives you a short lesson to fix that one thing.