Independent-samples T-tests 2: Effect Size

In this video, I demonstrate how to calculate the effect size for independent-samples t-tests and interpret the results. Three effect sizes are discussed:
1. Cohen's d: two groups have similar SDs and the same size.
2. Glass's delta: if each group has a different SD.
3. Hedges' g: different and/or small sample sizes; (below 20)
The calculator used is accessible from here: www.socscistatistics.com/effe...

[@ain.sudrajat491]

thank you so much for sharing the calculator!!!

[@panpanyang8938]

very informative and easy to understand.

[@VirtualSolace]

Thanks for the lucid demonstration. I have a question: Do we use the same scale for small, medium and large effect size for Glass's Delta effect size as used for Cohen's D? Like. 02 is small and. 05 is medium.
My effect size value for Glass's Delta test is like 5.914252...it is ok😮?

[@BasilTU]

Thank you for this video
What software do you use for the presentation?

[@jennychang2200]

You have no idea you save my life (my fyp I mean)

[@yasaminbakhtiari2004]

perfect

[@xueweizhou359]

At 4:45 as for the mean and Sd for men,are there typos in the websites?the mean for men is 5.03 rather than 5.05 and the Sd is supposed to be 2.127 rather than 2.217?

[@Adityakumar-uh9wo]

Its cumulative sd

[@jbt3479]

I cant see which one you select at the end of the video, since follow up videos to watch is showing across of what you select :(

[@VahidAryadoust]

I just revised the end-video 'cards'. Please watch again. FYI, I chose Glass's delta because of the differences in the SD.

[@bayarsaikhanbaasanbat9009]

Please explain how to interpret the effect sizes.

[@VahidAryadoust]

Please see the next videos in the same list.

[@xueweizhou359]

at 7.09,maybe another typo?I suppose the sample size for male is 880 rather than 808?

[@VahidAryadoust]

Thanks for your careful watching. Am sorry for the error. The Ms and SDs should be correctly inputted in the slots.

[@xueweizhou359]

@@VahidAryadoust Thank you,prof!I have learnt a lot!