Question

A data set whose original x values ranged from 28 through 49 was used to generate a regression equation of ŷ = 2.9x – 34.7. Use the regression equation to predict the value of y when x=56127.7318.7Meaningless result121.1

Answer 1

You have to replace the x value in the equation:

$ŷ=2.9x-34.7$$ŷ=2.9(56)-34.7$$ŷ=127.7$