erf - Maple Help

MapleTA[Builtin]

 erf
 cumulative probability of a standard normal distribution

 Calling Sequence erf(z)

Parameters

 z - numeric

Description

 • The erf command computes the cumulative probability (probability that a variate assumes a value less than or equal to z) for a standard normal distribution (that is, with mean 0 and variance 1).
 • Other normal distributions can be modeled by re-normalizing (that is, erf((z-m)/s) is the probability distribution of a normal distribution with mean m and standard deviation s).
 • Note that this is not the same as Maple's top-level erf command.  It is synonymous with Statistics:-CDF( Normal(0,1), z, 'numeric').

Examples

 > $\mathrm{MapleTA}:-\mathrm{Builtin}:-\mathrm{erf}\left(0\right)$
 ${0.500000000000000}$ (1)
 > $\mathrm{MapleTA}:-\mathrm{Builtin}:-\mathrm{erf}\left(0.62\right)$
 ${0.732371106531017}$ (2)

Compatibility

 • The MapleTA[Builtin][erf] command was introduced in Maple 18.
 • For more information on Maple 18 changes, see Updates in Maple 18.