<p><strong>Usage of "weights": in surveys</strong></p>

<p>Weights are used in analysis of complex survey data. The initial motivation comes from Horwitz-Thompson estimator, in which the weights are the inverse probabilities of selection. In most modern survey data sets, weights also account for multiple ways to reach the observation unit (e.g., through both landline and cell phones in phone surveys), nonresponse, and calibration/generalized regression estimation intended to improve precision.</p>

<ul>
<li>Upvote: questions that primarily deal with this use of weights should be (re)tagged <a href="https://stats.stackexchange.com/questions/tagged/survey-sampling" class="post-tag" title="show questions tagged &#39;survey-sampling&#39;" rel="tag">survey-sampling</a>.</li>
<li>Downvote: such questions should be left alone as is.</li>
<li>Comment: please provide your considerations.</li>
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