You must cite this article if you use its information in other circumstances. An example of citing this article is:

Ronny Gunnarsson. G*Power [in Science Network TV]. Available at: https://science-network.tv/gpower/. Accessed September 19, 2021.

Ronny Gunnarsson. G*Power [in Science Network TV]. Available at: https://science-network.tv/gpower/. Accessed September 19, 2021.

Suggested pre-reading |
What this web page adds |
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This web-page provides an introduction to the statistical software G*Power. Reading this will give you enough knowledge to be able to try doing simple things in G*Power. |

(Still under construction but there is some useful information below.)

G*Power is a software that can make sample size calculations and power estimations. It can manage most types of statistical tests except Cox regression. G*Power can be downloaded from Dussedorf University.

# Examples for comparing two groups

Click to watch any of these videos.

Example 1 of sample size calculation for comparing two groups – T-test and Mann-Whitneys test# Example for Logistic regression

Click to watch any of these videos.

Example of sample size calculation for unconditional binary Logistic regression when the independent variable is binary (such as gender)# Useful links

You must cite this article if you use its information in other circumstances. An example of citing this article is:

Ronny Gunnarsson. G*Power [in Science Network TV]. Available at: https://science-network.tv/gpower/. Accessed September 19, 2021.

Ronny Gunnarsson. G*Power [in Science Network TV]. Available at: https://science-network.tv/gpower/. Accessed September 19, 2021.