lue `expv`.</pre><a href="https://janetdocs.org/math/t-test">Community Examples</a></div><hr><div class="binding"><span id="math/t-test-2" class="binding-sym">math/t-test-2</span> <span class="binding-type">function</span> <span class="binding-type"><a href="https://github.com/janet-lang/spork/blob/285fced0323c318d26e6ecf767f2870aa948a3cf//spork/math.janet#L449">source</a></span> <pre class="binding-text">(t-test-2 xs ys &amp;opt d)

Computes two sample t-test of two samples `xs` and `ys`
with difference op