12.11: Statistical Literacy

Introductory Statistics · LibreTexts

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    From LibreTexts, under Public Domain, as the source states it; its equations are written in TeX, which the PDF shows typeset. This page at LibreTexts.

    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?

    Solution

    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 was last modified on Sat, 23 Apr 2022 18:23:34 GMT and 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.