Conditional scatter plot sigma

[employe4_2]

Hi.

I have to display a scatter plot from multiple production type.I must have to scatter plot chart to compare productions

Today i use If statement : =if([OP_name]='OP03',[End.of.Position.],null())

and display one production in one scatter plot.

How could i display multiple scatter plot on one screen.

And second part, i'd like to colorise  the dots wich are outside of 3 sigma :the standart deviation.

i can colorise function of a field so how can i calculate 3 sigma in conditionnal statement?

thx

[Anil_Babu_Samineni]

May be

=if(Match([OP_name], 'OP03', 'OP04'),[End.of.Position.],null())