How To Calculate Sample Size Using Power Analysis

Power matters!
Power analysis is used to estimate the approximate sample size in an experiment.
Subscribe to advance your knowledge of statistics and data visualization:
Click here: www.youtube.co...
Recommended Playlist - Statistics Bootcamp
• GraphPad Statistics Bo...
Timestamps
00:00 Introduction
00:20 What is power?
01:56 What does power look like?
Null and alternative hypotheses
02:26 What does power look like?
Type I error (α)
02:58 What does power look like?
Type I error (α) and statistical significance
03:37 What does power look like?
Type II error (β) and power
04:22 What does power look like? Power = 80%
05:37 The critical value
06:05 Power analysis
About the video
As more and more funding bodies are asking for the actual power calculations and reviewers are using power, the importance of power analysis will only rise in importance. Watch as Dr. Anne Segonds-Pichon, a Biostatistician, and one of the instructors on the Graphpad Statistics Bootcamp series demonstrates how you can use power analysis can help you get a large enough sample size to detect the effect you are looking for, while avoiding unnecessarily large sample sizes that waste resources.
In this video you will learn
- What power analysis is and why it’s needed
- Type I and Type II errors and how they relate to power
- The five parameters that affect power
FREE USEFUL TOOLS FOR RESEARCHERS
QuickCalcs
Run quick statistical tests with free online calculators.
www.graphpad.c...
How to perform the most common types of analyses
Learn the steps required to perform the most common types of analyses. Topics include selecting the right data table, navigating the analysis choices and results, and formatting and annotating your graphs.
www.graphpad.c...
Free Statistics Bootcamp
Without an understanding of the fundamentals of statistics, it can be intimidating. This video series gives you the statistical background you need to start performing analyses in Prism with confidence.
Presented by Dr Anne Segonds-Pichon, Bio-Statistician from the Babraham Institute.
www.graphpad.c...
Create High-Quality Graphs for your Research
Learn how to tell the story you want with your data!
www.graphpad.c...
www.graphpad.com/prism