What is Regression? | SSE, SSR, SST | R-squared | Errors (ε vs. e)
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-biPlease note that in my videos I use the abbreviations:SSR = Sum of Squares due to the RegressionSSE = Sum of Squares due to Error.Intro: 0:00Y-hat line: 2:26Sample error term, e: 3:47SSR, SSE, SST: 8:40R-squared intro: 9:43Population error term, ε: 12:11Second video here: http://www.youtube.com/watch?v=4otEcA3gjLkEver 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.