stats_dens_exponential

(PECL stats >= 1.0.0)

stats_dens_exponentialProbability density function of the exponential distribution

说明

stats_dens_exponential ( float $x , float $scale ) : float

Returns the probability density at x, where the random variable follows the exponential distribution of which the scale is scale.

参数

x

The value at which the probability density is calculated

scale

The scale of the distribution

返回值

The probability density at x or FALSE for failure.

相关文章
php statistic 函数 calculates any one parameter of the exponential distribution given values for the othersphp statistic 函数 calculates any one parameter of the normal distribution given values for the othersphp statistic 函数 calculates any one parameter of the poisson distribution given values for the othersphp statistic 函数 probability density function of the beta distributionphp statistic 函数 probability density function of the cauchy distributionphp statistic 函数 probability density function of the chi square distributionphp statistic 函数 probability density function of the exponential distributionphp statistic 函数 probability density function of the f distributionphp statistic 函数 probability density function of the gamma distributionphp statistic 函数 probability density function of the laplace distributionphp statistic 函数 probability density function of the logistic distributionphp statistic 函数 probability density function of the normal distributionphp statistic 函数 probability mass function of the binomial distributionphp statistic 函数 probability mass function of the hypergeometric distributionphp statistic 函数 probability density function of the negative binomial distributionphp statistic 函数 probability mass function of the poisson distributionphp statistic 函数 probability density function of the t distributionphp statistic 函数 probability density function of the uniform distributionphp statistic 函数 probability density function of the weibull distributionphp statistic 函数 generates a random deviate from the exponential distribution
关注编程学问公众号