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Title:Introduction to REGRESSION! | SSE, SSR, SST | R-squared | Errors (ε vs. e)
Duration:15:00
Viewed:1,373,915
Published:22-11-2011
Source:Youtube

UPDATED VERSION OF THIS VIDEO FOR 2023! Check it out here: https://www.youtube.com/watch?v=eYTumjgE2IY All videos here: http://www.zstatistics.com/ The first video in a series of 5 explaining the fundamentals of regression. See the whole regression series here: https://www.youtube.com/playlist?list=PLTNMv857s9WUI1Nz4SssXDKAELESXz-bi Please note that in my videos I use the abbreviations: SSR = Sum of Squares due to the Regression SSE = Sum of Squares due to Error. Intro: 0:00 Y-hat line: 2:26 Sample error term, e: 3:47 SSR, SSE, SST: 8:40 R-squared intro: 9:43 Population error term, ε: 12:11 Second video here: http://www.youtube.com/watch?v=4otEcA3gjLk Ever wondered WHY you have to SQUARE the error terms?? Here we deal with the very basics: what is regression? How do we establish a relationship between two variables? Why must we SQUARE the error terms? What exactly is SSE, SSR and SST? What is the difference between a POPULATION regression function and a SAMPLE regression line? Why are there so many different types of error terms?? Enjoy.



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