Gaussian mixture distribution
= Gaussian mixture distribution
{c}
{title2=$p(x)=\sum_jw_j\phi_{\mu_j,\sigma_j}(x)$}
A <Gaussian mixture distribution> is a weighted sum of <normal distribution> densities, with nonnegative weights summing to one. It need not itself be a <normal distribution>: components with different means and <variances> can produce <skewness> or several modes. Its raw <moments> are weighted sums of the component <moments>.