A selection of Normal Distribution Cumulative Density Functions (CDFs). Both the mean, <i>μ</i>, and variance, <i>σ²</i>, are varied. The key is given on the graph.
<a href="//commons.wikimedia.org/wiki/User:Inductiveload" title="User:Inductiveload">Inductiveload</a>
<span class="int-own-work" lang="en">Own work</span> (<span lang="en" dir="ltr">Original text: <i><bdi lang="">self-made, Mathematica, Inkscape</bdi></i></span>)