on level3">
<h3 id="what-is-the-counter_weight-column-in-the-pseudo-population">7) What is the <code>counter_weight</code> column in the pseudo
population?<a class="anchor" aria-label="anchor" href="#what-is-the-counter_weight-column-in-the-pseudo-population"></a>
</h3>
<p>Both matching and weighting approaches find a combination of the
original data set to pass the covariate balance test. In the case of
matching, the package uses a different number of data samples. Some data
samples are never used; hence t