QUESTION $10$

If computing a causal linear regression model of $Y=a+bx$ and the resultant $r^2$ is very near zero, then one would be able to conclude that $Y=a+bx$ is not a good forecasting method.

a multiple linear regression model is not a good forecasting method for the data.

a multiple linear regression model is a good forecasting method for the data.

$Y=a+bx$ is a good forecasting method.