      2.848   2.809   0.0105 *  </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> group3         5.125      2.848   1.800   0.0863 .  </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> ---</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> Residual standard error: 5.6