normal distribution

normaalijakauma puhekieltä Any of a family of continuous probability distributions such that the probability density function is the Gaussian function

\varphi_{\mu,\sigma^2}(x) = \frac{1}{\sigma\sqrt{2\pi \,e^{ -\frac{(x- \mu)^2}{2\sigma^2 = \frac{1}{\sigma} \varphi\left(\frac{x - \mu}{\sigma}\right),\quad x\in\mathbb{R}