rdrr.io/r/stats/anova.html" class="external-link">anova</a></span><span class="op">(</span><span class="fu"><a href="https://rdrr.io/r/stats/lm.html" class="external-link">lm</a></span><span class="op">(</span><span class="va">age</span> <span class="op">~</span> <span class="fu"><a href="https://rdrr.io/r/base/factor.html" class="external-link">as.factor</a></span><span class="op">(</span><span class="va">phase</span><span class="op">)</span>, data<span class="op">=</span> <span class="va">Archaeo</span><s