Unpaired two sample t-test | step-by-step examples

This video reviews the unpaired two sample t-test and works through several examples of how it works. Step-by-step examples of how to perform both the homoscedastic t-test and heteroscedastic t-test are demonstrated. The video also illustrates the differences between the power and assumptions of the homoscedastic and heteroscedastic t-tests. This is the video that answers the questions: how do I do an unpaired t-test? StatsExamples website: http://www.statsexamples.com/ Link to the video which introduces the two sample t-test: https://youtu.be/tuQ23QGOeLo 00:00 - Introduction and review 06:23 - Example #1 (Masses of fish at two reefs) 15:44 - Example #2 (recovery times for a medical procedure) 16:29 - Example #3 (cracks in wall at construction sites) 20:44 - Final words about the unpaired t-test #StatsExamples #PairedTtest #Ttest #stats #statistics ========music, image, and video credits======== All non-original images are believed to be in the public domain, available under a CC-0 or CC-by-SA license, obtained under paid license, or used under a "fair use" interpretation. If you believe that an item you own the copyright to is here, please contact us using the email available on the "About" section of the channel. Details of credits for this video can be found at: http://www.statsexamples.com/credits-videos.html Images from Storyblocks under a license.