stats_cdf_logistic

(PECL stats >= 1.0.0)

stats_cdf_logistic — Calculates any one parameter of the logistic distribution given values for the others

说明

stats_cdf_logistic ( float $par1 , float $par2 , float $par3 , int $which ) : float

Returns the cumulative distribution function, its inverse, or one of its parameters, of the logistic distribution. The kind of the return value and parameters (par1, par2, and par3) are determined by which.

The following table lists the return value and parameters by which. CDF, x, mu, and s denotes cumurative distribution function, the value of the random variable, and the location and the scale parameter of the logistic distribution, respectively.

**Return value and parameters**
`which`	Return value	`par1`	`par2`	`par3`
1	CDF	x	mu	s
2	x	CDF	mu	s
3	mu	x	CDF	s
4	s	x	CDF	mu

参数

par1: The first parameter
par2: The second parameter
par3: The third parameter
which: The flag to determine what to be calculated

返回值

Returns CDF, x, mu, or s, determined by which.

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官方地址：https://www.php.net/manual/en/function.stats-cdf-logistic.php

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stats_cdf_logistic

说明

参数

返回值

User Contributed Notes