Question

Help please on this

Answer 1

when it comes to regression there are two quantities: expected value and observed value

Answer 2

the equation y^ = 20 - 1.5x gives the expected value for y, or the values on the regression line, for every x

Answer 3

first, use the equation to calculate the expected y value for x = 3

Answer 4

y^ = 20 - 1.5x = what when x = 3?

Answer 5

-4.5?

Answer 6

hm not quite

Answer 7

20 - 1.5x = 20 - 1.5(3) = ?

Answer 8

15.5

Answer 9

:/

Answer 10

yes good

Answer 11

now let's look at the coordinate given in the problem

(3,15.5)

this is the observed value

notice how it is the same as the predicted value

Answer 12

this implies that the point falls on the regression line (option c)

Answer 13

Oh okay so because the points fall on that line it is c?

Answer 14

yes, this one point in particular