# 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.