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ERF |
Category: | Mathematical |
Syntax | |
Arguments | |
Details | |
Examples |
Syntax |
ERF(argument) |
Details |
The ERF function returns the integral, given by
Examples |
You can use the ERF to find the probability (p) that a normally distributed random variable with mean 0 and standard deviation will take on a value less than X. For example, the quantity that is given by the following statement is equivalent to PROBNORM(X):
p=.5+.5*erf(x/sqrt(2));
SAS Statements | Results |
---|---|
y=erf(1.0); |
0.8427007929 |
y=erf(-1.0); |
-0.842700793 |
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