I ask about the correlation between the sample size, the power of the study and r (correlation coefficient, and if there are any direct online calculator of these three variables.
Thanks in advance.
Hello Sarmad,
Yes, there are very good resources available online to assist with planning a study so as to have sufficient statistical power to detect some specific target effect size (or larger): in your case, a correlation. The g*power program (available for windows or mac OS) is freely available: http://www.psychologie.hhu.de/arbeitsgruppen/allgemeine-psychologie-und-arbeitspsychologie/gpower.html
Good luck with your work.
you may refer my article for this:
Chapter Sample Size and Power Calculation
Hi,
you can have a look on
https://www.sample-size.net/correlation-sample-size/
Depending on your statistical analysis, you can follow references for sample size, which are recommendations.
example is Hair et al (2010), where they recommend a data set of approximately 200 as larger sample sizes can have deviations and/or errors that leads to biased interpretation of the results.
Very elaborated comment David Morse , and thank you very much indeed for sharing the link of G*Power software. The G*Power software is an effective tool that can be used to compute statistical analyses for many different tests.
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