a-level="6.4" data-path="nonOrthogonal.html"><a href="nonOrthogonal.html"><i class="fa fa-check"></i><b>6.4</b> What makes a good set of contrasts?</a>
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<li class="chapter" data-level="6.4.1" data-path="nonOrthogonal.html"><a href="nonOrthogonal.html#centered-contrasts"><i class="fa fa-check"></i><b>6.4.1</b> Centered contrasts</a></li>
<li class="chapter" data-level="6.4.2" data-path="nonOrthogonal.html"><a href="nonOrthogonal.html#orthogonal-contrasts"><i class="fa fa-check"></i><b>6.4.2</b> Orthogona