Question

Which equation of the least squares regression line most closely matches the data set? yˆ=3.5x−6921.2 yˆ=5.5x+52 yˆ=−2.2x+13.8 yˆ=0.17x−13.2

x. y
2. 65
4. 74
6 81
8. 96
10. 109
PLZ HELP (30P)

Answer 1

B.
`y=5.5x+52`

Explanation:

We are given the data set,

x y

2 65

4 74

6 81

8 96

10 109

Now, using the regression calculator, we get that,

The linear equation for that matches the data is
`y=5.5x+52`.

So, option B is correct.

Answer 2

A graphing calculator finds the regression line to be
y = 5.5x + 52