Question

A data set consists of these points: (2, 4), (4,7), (5, 12). Malinda found the

regression equation to be y = -2.5x - 1.5. Is she correct?
O
A. No. Both a and b are incorrect.
O
B. No. The value for bis incorrect.
O
C. No. The value for a is incorrect.
O
D. Yes. This is the correct equation.

Answer 1

Given:

We are given the points:

`(2,\text{ 4), (4, 7), (5, 12)}`

Using a graphical calculator:

The regression equation is:

`y\text{ = }2.5x\text{ -1.5}`

Answer: Yes this is the correct equation (Option D)