Effect size

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Introduction

Used in a very general sense, effect size is the quantitative measure of strength in a statistical relation (e.g. correlations, differences of means, etc.) and it is defined as such in Wikipedia.

In the literature, the wording "effect size" is mostly used in meta studies, where it refers to various techniques that allow combining multiple effect-sizes.

Tools

Practical Meta-Analysis Effect Size Calculator. This is an online tool developed by David B. Wilson, Ph.D., George Mason University

Effect size

Introduction

Tools

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