General Craptastical Methods 1

[mangelbojangel]

I read this:

"average = Σ (value) x (Rel.freq.) =

Variance = Σ (value - ave)² x Rel.freq. =

= Σ (value)² x (Rel.freq) - (average)²

SD = √Variance"

And it means SHIT ALL to me.

I'm an arts student, I mean WHAT THE FUCK?