on</a> package.) In particular, Stata provides the following options:</p>
<ul>
<li>
<code>at</code>: calculate marginal effects at (potentially representative) specified values (i.e., replacing observed values with specified replacement values before calculating marginal effects)</li>
<li>
<code>atmeans</code>: calculate marginal effects at the mean (MEMs) of a dataset rather than the default behavior of calculating average marginal effects (AMEs)</li>
<li>
<code>over</code>: calculate marginal effects (inc