Question

The data in the table are entered into a regression calculator.

Based on the line of best fit produced by the regression calculator, which is the best prediction for the value of y when x=64?

250
260
317
325

Answer 1

he correct answer is 260

Answer 2

The correct option is 2.

Explanation:

From the given pictures it is clear that the linear regression line for the given data is

`y=3.98x+5.022`

We have to find the best prediction for the value of y when x=64.

Substitute x=64 in the given equation.

`y=3.98(64)+5.022`

`y=254.72+5.022`

`y=259.742`

`y\approx 260`

Therefore the correct option is 2.