Any maths / statistics whizzes here?

[NotAllThere]

I am looking to see if I can extrapolate some numbers based on the information set I have.

If a sample is 100% and each week 0.4% "do a thing"...

No, now you've gone too far the other way - Not 0.004, it's 0.04%

He's got it right. By accident I'm sure. It 0.4% probability = 0.004 probability.

[OwlHoot]

He's got it right. By accident I'm sure. It 0.4% probability = 0.004 probability.

Fair point - Just shows, once one person spreads confusion, others can start fecking up too!