Inferential Statistics
Basian Statistics
The general form of the normal probability density function is:
$$ f(x) = \frac{1}{\sigma \sqrt{2\pi} } e^{-\frac{1}{2}\left(\frac{x-\mu}{\sigma}\right)^2} $$
The parameter $\mu$ is the mean or expectation of the distribution.
$\sigma$ is its standard deviation.
The variance of the distribution is $\sigma^{2}$.