The graph and accompanying table shown here display 12 observations of a pair of variables (x, y).

The variables x and y are positively correlated, with a correlation coefficient of r = 0.98.

What is the slope, b, of the least squares regression line, y = a + bx, for these data? Round your answer to the nearest hundredth.

x 3 6 8 9 9 13 15 18 20 21 23 23
y 9 17 15 15 18 24 29 36 43 39 46 45

Question

The graph and accompanying table shown here display 12 observations of a pair of variables (x, y).

The variables x and y are positively correlated, with a correlation coefficient of r = 0.98.

What is the slope, b, of the least squares regression line, y = a + bx, for these data? Round your answer to the nearest hundredth.

x	3	6	8	9	9	13	15	18	20	21	23	23
y	9	17	15	15	18	24	29	36	43	39	46	45

anonymous · Answer

have u try to plot it?

anonymous · Answer

hmmm.. is it linear? (i think it should be linear though)
if that's the case, then find the gradient?? 
(I do really advice you to plot it..)
and there should be given equation for least square.. (it looks quite annoying for me.. hahahaha!!)

anonymous · Answer

4

anonymous · Answer

No, I haven't tryed to plot it. so the slope could be 4?

anonymous · Answer

i'll take two points n find the gradient i.e b..