erf

This function is the Gauss error function, defined as:

ガウスの誤差関数です。以下のように定義されます：

構文

erf(x)

The x argument represents the independent variable and can either be a scalar or a range of numbers. If x is a range, then it must be defined by either using braces { } or by specifying a worksheet column. Any value for x must be real.

Example

If a series of measurements is described by a normal distribution with standard deviation σ and expected value 0, then the probability that the error of a single measurement is between -.2 and +.2 is given by:

erf(.2/(2*sqrt(2)) = .079656

関連情報

• erfc