Question

Charlie used a regression calculator to generate the equation f(x) = –0.15x + 20.1 for the ordered pairs (2, 15), (4, 21), (6, 26), (8, 20), and (10, 14).

Is a linear representation the best way to represent the data? If it is, explain why. If not, explain why and suggest a better alternative.

Answer 1

@Vocaloid

Answer 2

have you attempted to graph it? do the points make a straight line or not?

Answer 3

@tannerz

Answer 4

im doing it now

Answer 5

The r-values are very close to 0. Quadratic models are the best representation because the data increases and then decreases

Answer 6

yea its a straight line

Answer 7

So your best alternative is to use a quadratic function

Answer 8

i got y= -0.15x + 20.1