?

AP® Statistics

Free Version

Upgrade subject to access all content

Moderate

Finding LSRL: Dow Jones and Year

APSTAT-GPJGTB

In February of 2009, the Dow Jones Industrial Average (DJI) reached its lowest point in 10 years. Since then, the Dow Jones has been steadily increasing. Analysts have been studying the relationship between the highs of the Dow Jones for each year since 2009. A computer regression analysis of the data is given below:

Dependent variable is: Dow Jones Industrial Average (DJI)

$R^2 = 93.33\%$
$s= 1116.14$ with $6-2= 4$ D.O.F.

Variable: Coefficient s.e Coeff t-ratio prob
Constant: 8224.89 735.23 16.06 0.00001
Year: 1993.35 123.34 7.47 0.0017



What is the equation for the least squares regression line?

A

$\widehat { year } =8224.89\text{ DJI}+1993.35$

B

$\widehat { year } =1993.35\text{ DJI}+8224.89$

C

$\widehat { DJI } =8224.89\text{ year}+1993.35$

D

$\widehat { DJI } =1993.35\text{ year}+8224.89$

E

$\widehat { DJI } =0.9333\text{ year}+1116.14$