Which line is a linear model for the data?
what data
Which line do you think is closest to fitting the data points? Well , more specifically, which line do you think reduces the distance between the point and line, for the most points possible?
I think its the last one ? @Nnesha help
@iGreen
Well for one thing, the line should be at least going in the "same direction" as where the points are lying , for example: if you have the following dots on your graph, I draw 3 lines that show which line works best, medium good, and worst w|dw:1426018248224:dw|
One trick you can try is to draw an ellipse that appoximately encompasses all your dots, and then draw a line through the major axis of that ellipse. (Or just imagine drawing such an ellipse, since you have it on screen)
so d ?
Not quite. Let's draw your data set (approximately), and I'll do an ellipse which is as close to the points as possible while encompassing all of them. Then I'll draw the line through the middle of the ellipse (through the major axis). |dw:1426018896953:dw|
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