Exam 14: Simple Linear Regression

Regression analysis was applied between sales (in $1000s) and advertising (in $100s), and the following regression function was obtained. ? $\hat { y }$ = 80 + 6.2x ? Based on the above estimated regression line, if advertising is $10,000, then the point estimate for sales (in dollars) is _____.

The proportion of the variation in the dependent variable y that is explained by the estimated regression equation is measured by the _____.

Compared to the confidence interval estimate for a particular value of y (in a linear regression model), the interval estimate for an average value of y will be _____.

The least squares criterion is _____.