Sampling weights: The right variables make a big difference for accuracy. Complex statistical methods, not so much Posted on January 29, 2018 by Matthew T. Ballew http://www.pewresearch.org/2018/01/26/for-weighting-online-opt-in-samples-what-matters-most/ Share this: Email a link to a friend (Opens in new window) Email Share on LinkedIn (Opens in new window) LinkedIn Share on X (Opens in new window) X Share on Facebook (Opens in new window) Facebook