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12.11: Statistical Literacy

  • Page ID
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    Learning Objectives

    • Effectiveness of Surgery for Weight Loss

    Research on the effectiveness of surgery for weight loss reported here found that "The surgery was associated with significantly greater weight loss [than the control group who dieted] through \(2\) years (\(61.3\) versus \(11.2\) pounds, \(P<0.001\))."

    Example \(\PageIndex{1}\): what do you think

    What test could have been used and how would it have been computed?


    For each subject a difference score between their initial weight and final weight could be computed. A t test of whether the mean difference score differs significantly from \(0\) could then be computed. The mean difference score will equal the difference between the mean weight losses of the two groups (\(61.3 - 11.2 = 50.1\)).

    This page titled 12.11: Statistical Literacy is shared under a Public Domain license and was authored, remixed, and/or curated by David Lane via source content that was edited to the style and standards of the LibreTexts platform; a detailed edit history is available upon request.

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