Thanks for clarifying this. As I said it has been a while since I used statistics 🙂

That makes sence.

So its really a matter of SQL Server returning NULL instead of #ERROR not having the correct syntax which obviously means that a FROM clause needs to be...

I'm not really going to comment on that answer.

Just happy you are not creating any kind of BI og reporting in our company 🙂

I might be wrong but i still...

I do not agree that the answer is right.

Think it is supposed to be 0.

the standard deviation s (sigma) is the square root of the average value of (X...