How to Calculate Sample Size for Multiple Groups Using G Power: Step-by-Step Guide

In this tutorial, learn how to perform sample size calculation for multiple group comparisons using G*Power software. We'll walk you through each step for conducting repeated measures ANOVA, covering essential parameters like effect size, significance level, and power. Understanding these elements is crucial for statistical analysis in clinical trials, randomized controlled trials (RCTs), and other research designs. We’ll also discuss strategies for estimating effect sizes, especially when values are not readily available in the literature.

This video is perfect for beginners in research, students, and anyone looking to strengthen their knowledge in statistics. Watch until the end to master using G*Power for calculating the required sample size in experimental studies and make informed decisions on your study design.

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