Question

Stats help @ganeshie8 @jabez177 @mathmale

Answer 1

I need help with b)

Answer 2

Sorry, Statistics aren't my thing...
Ganeshie is actually if I'm not mistaken, the ONLY person that knows it.

Answer 3

Ok, thanks :)

Answer 4

@ganeshie8

Answer 5

woah this is like collage stuff lol

Answer 6

but i havent learnd this yet sorry

Answer 7

The reason I'm confused how to do it is because the residual plot they show does not go up to x=5

Answer 8

I'd suggest that you DRAW the given regression line. Then, let x=5 and read off the approximate y value from your graph of this regression line.

Next, use the line to predict the value of y when x=5. Compare this y value to the actual, measured value of y represented by a tiny box on the graph.

Answer 9

Hmm....but wouldn't it get about the same result..? Since you're getting both answers from the regression line, and that's not comparing it to actual data

Answer 10

If you'll look carefully at the graph, you can surely located x=5. There's a little box symbol there. What is the y-coordinate of that little box symbol?

I disagree. 1) locate the little box symbol for x=5 and estimate the y-coordinate for that box. 2) use the regression line formula to calculate y for that x=5. Find the difference between the 2 y-values. THAT is your residual.

Answer 11

But the scale is 1, right? so it only goes up to x=1?

Answer 12

@mathmale

Answer 13

@ganeshie8

Answer 14

nvm, figured it out