I'm learning about standard deviation and I notice there is another kind of deviation option on my calculator.
The standard deviation is denoted by $\sigma x$ on my calculator while the other kind of deviation is denoted by $sx$.
Just to clarify what $sx$ does, given the data $1,2,3$, $\sigma x=0.816$ while $sx=1.000$.
What is the name of this kind of variance ?
I am assuming it is a kind of variance based on what it does with data.