Sample Size Issues and Power
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Psy 510/610 Multilevel Regression, Spring 2017 1 Sample Size Issues and Power There are two sample size issues to be concerned about. One issue has to do with the minimum number of cases needed for using multilevel regression to avoid biases. The second issue concerns sufficient statistical power needed for obtaining significance. Generally, having more groups is more important than having more cases per group for either of these concerns (see Scherbaum & Ferreter, 2009, for a review).
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Sample Size Issues and Power
1 USP 656 Multilevel Regression Winter 2013 Sample Size Issues and Power There are two sample size issues to be concerned about. One issue has to do with the minimum number of cases needed for using multilevel regression to avoid biases. The second issue concerns sufficient statistical power needed for obtaining significance. Generally, having more groups is more important than having more case...
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