CND1(x) Returns the Cumulative Normal Distribution (CND) using the Hart (1968) method. (preferred method, 14-18 decimal accuracy) Parameters: x: float, Returns: float.
CND2(x) Returns the Cumulative Normal Distribution (CND) using the Abromowitz and Stegun (1974) Polynomial Approximation. Parameters: x: float, Returns: float.
CND3(x) Returns the Cumulative Normal Distribution (CND) using Newton-Cotes method, Boole’s rule Parameters: x: float, Returns: float.
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Added: CND4(Z) Returns the standard normal cumulative distribution function. The distribution has a mean of 0 (zero) and a standard deviation of one. Use this function in place of a table of standard normal curve areas. Parameters: Z: float, The value for which you want the distribution. Returns: float, standard normal cumulative distribution function