How to do a Pearson Correlation by Hand (13-7)
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- Опубликовано: 21 авг 2024
- Doing a correlation example by hand is a great way to really understand correlation. We will begin with the assumptions for the data and the necessary settings for null hypothesis testing. Next, I will show you an example of using the correlation formula on a simple dataset. You will also learn how to test for the significance of a correlation using a t test. This will get you acquainted with the procedure. Then we will learn how to do it using statistics software.
This video teaches the following concepts and techniques:
Pearson Correlation by hand using formulas
Link to a Google Drive folder with all of the files that I use in the videos including the Effect Size Calculator for t Tests and datasets. As I add new files, they will appear here, as well.
drive.google.c...
Your videos helped me alot, Thank you !!!
Thank you for this video. Especially the last part where you mentioned how to report the results.
Yes, the write-up is often neglected, but it is really important when you actually do a correlation. Glad that we could help.
thanks for the explanation! this really helped me to jog some old memories (maybe ;))
but, i would like to ask about CV. how do i search/calcute it?
Hello sir, your videos are very helpful..thanks for sharing your valuable knowledge with us...However, i would like to ask whether the value of coefficient of determination can be used as an alternative to t-test here, as you have already said in another video that coefficient of determination measures the effect of independent variable on the dependent one..
It is a little more complicated than just using r-squared, but the long answer is that yes, you can. You can test whether a correlation coefficient is statistically significantly different than 0 or another coefficient, but you must convert the Pearson r (which is skewed) to Fisher's Z (which is normally distributed), then you can use it in a t-test formula. I have a spreadsheet I created on that...might be a good video to produce. Thanks.
@@ResearchByDesign thank you sir for your kind response..
I'm not going to say eating apples keeps one from doctor visits, but I am going to crush this apple right fast.