fu">MAest.gregRatio</span><span class="op">(</span></span>
<span>  <span class="va">yn</span>,</span>
<span>  <span class="va">yd</span>,</span>
<span>  <span class="va">N</span>,</span>
<span>  <span class="va">area</span>,</span>
<span>  <span class="va">x_sample</span>,</span>
<span>  <span class="va">x_pop</span>,</span>
<span>  FIA <span class="op">=</span> <span class="cn">TRUE</span>,</span>
<span>  save4testing <span class="op">=</span> <span class="cn">FALSE</span>,</span>
<span>  modelselect <span