Error in applied mathematics the difference between a true value and an estimate or approximation of that value.
Error function math.
Input specified as a symbolic number variable expression or function or as a vector or matrix of symbolic numbers variables expressions or functions.
Erf satisfies the identities.
In numerical analysis round off error.
Functions are ubiquitous in mathematics and are essential for formulating physical relationships in the sciences.
Erf is implemented in the wolfram language as erf z a two argument form giving is also implemented as erf z0 z1.
Note that some authors e g whittaker and watson 1990 p.
In statistics a common example is the difference between the mean of an entire population and the mean of a sample drawn from that population.
341 define without the leading factor of.