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P-value interpretation issue

p-value ≤ 0.05, there is a 5% probability that the variation that we see is by chance

It’s very popular but incorrect interpretation.

It’s not the probability of it being by chance, but the probability of it or more extreme happening if it is by chance.

Basically, what we see or larger difference happens with <5% probability when H0 is true so we agree to reject it.

Hi @Evgeny. Thanks for reaching out.
The explanation is updated. I hope it is more explanatory now.

If you face any ambiguity, pin the course & lesson so we can respond better.