Update Jamovi references and finish the chapter on two-way ANOVA

Author: bradduthie

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@@ -588,7 +588,7 @@ <h2><span class="header-section-number">11.3</span> The median and quantiles<a h
 <pre><code>3.1, 3.5, 3.8, 4.0, 4.2, 4.2, 4.6, 5.0</code></pre>
 <p>There are at least 9 different ways to calculate the first quartile in this case, and different statistical software package will sometimes use different default methods <span class="citation">(<a href="#ref-Hyndman1996" role="doc-biblioref">Hyndman and Fan 1996</a>)</span>.
 One logical way is to calculate the mean between the second (3.5) and third (3.8) position as you would do for the median <span class="citation">(<a href="#ref-Rowntree2018" role="doc-biblioref">Rowntree 2018</a>)</span>, <span class="math inline">\((3.5 + 3.8) / 2 = 3.65\)</span>.
-Jamovi uses a slightly more complex method, which will give a value of <span class="math inline">\(3.725\)</span>.</p>
+Jamovi uses a slightly more complex method, which will give a value of <span class="math inline">\(3.725\)</span> <span class="citation">(<a href="#ref-Jamovi2022" role="doc-biblioref">The Jamovi Project 2022</a>)</span>.</p>
 <p>It is important to emphasise that no one way of calculating quantiles is the one and only correct way.
 Statisticians have just proposed different approaches to calculating quantiles from data, and these different approaches sometimes give slightly different results.
 This can be unsatisfying when first learning statistics because it would be nice to have a single approach that is demonstrably correct, i.e., the <em>right</em> answer under all circumstances.
@@ -612,6 +612,9 @@ <h3>References<a href="references.html#references" class="anchor-section" aria-l
 <div id="ref-Sokal1995" class="csl-entry">
 Sokal, Robert R, and F James Rohlf. 1995. <em><span>Biometry</span></em>. 3rd ed. New York: W. H. Freeman; Company.
 </div>
+<div id="ref-Jamovi2022" class="csl-entry">
+The Jamovi Project. 2022. <span>“Jamovi.”</span> Sydney, Australia. <a href="https://www.jamovi.org">https://www.jamovi.org</a>.
+</div>
 </div>
 <div class="footnotes">
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