excel - DAX Normal Distribution -


i looking function in dax acts norm.dist function in excel. have x value, mean, , standard deviation , looking find cumulative distribution (with accuracy of @ least 6 sigma).

i've searched through official list of dax statistical functions, not find function this. i'm looking economical way perform calculation. bell approximation best way go? iterated on table of 10,000 rows.

 sign([x])*0.5*(1-(1/30)*(7*exp(-([x]^2)/2)+16*exp(-([x]^2)*(2-sqrt(2)))+(7+0.25*pi()*[x]^2)*exp(-([x]^2))))^0.5+0.5

given [x] normalized. max error = .0000304

error:

error

compared previous solution:

relative error

http://mathworld.wolfram.com/normaldistributionfunction.html (14)


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