stats_dens_normal

    (PECL stats >= 1.0.0)

    stats_dens_normal — Probability density function of the normal distribution

    说明

    stats_dens_normal(float $x, float $ave, float $stdev): float

    Returns the probability density at x, where the random variable follows the normal distribution of which the mean is ave and the standard deviation is stdev.

    参数

    x

    The value at which the probability density is calculated

    ave

    The mean of the distribution

    stdev

    The standard deviation of the distribution

    返回值

    The probability density at x or false for failure.

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