Question

Nine pairs of data yield r=0.867 and the regression equation y=19.4+0.93x

What is the best predicted value of y for x=20?

Answer 1

38

Explanation:

Regression analysis is the relationship among one dependent variable and one or more independent variables. Method of regression is used in finance, investing, and other disciplines.

Given:

Nine pairs of data yield and the regression equation
`y=19.4+0.93x`

To find:

the best predicted value of y for
`x=20`

Solution:

`y=19.4+0.93x`

Put
`x=20`

`y=19.4+0.93(20)\\=19.4+18.6\\=38`