Effect Size Statistics, Power, and Sample Size Calculations

by Karen Grace-Martin



Calculating Power and Sample Size

Calculating Power and Sample Size WorkshopThis workshop will get you up to speed on the meaning and logic of power, sample size, and how to calculate estimates.  It includes demonstrations of power calculations for six different studies using three types of power calculation software.

The Craft of Statistical Analysis


Effect Size Statistics

Statistically Speaking Trainings


The Fundamentals of Sample Size Calculations

Power Analysis and Sample Size Determination Using Simulation

Articles at The Analysis Factor

The Effect Size: The Most Difficult Step in Calculating Sample Size Estimates

Sample Size Estimation Without Past Reliable Pilot Data or Evidence

Three Issues in Sample Size Estimates for Multilevel Models

Sample Size Estimates for Multilevel Randomized Trials

5 Reasons to Run Sample Size Calculations Before Collecting Data

5 Steps for Calculating Sample Size

Power and Sample Size Calculations

5 Ways to Increase Power in a Study

A Comparison of Effect Size Statistics

How to Calculate Effect Size Statistics

Two Types of Effect Size Statistic: Standardized and Unstandardized

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