PROBLEMS 1. Find, by a hand computation, the estimated regression line for the following data: OWN-...
Consider the following observed values: (-5,-2) (-3,1) (0,4) (2,6) (1,3) (1) find the estimated regression line based on the observed data (2) for each xi, compute fitted value of yi (3) compute the residuals ei (4) calculate the coefficient of determination
1. For each of the following regression models, write down the X matrix and 3 vector. Assume in both cases that there are four observations (a) Y BoB1X1 + B2X1X2 (b) log Y Bo B1XiB2X2+ 2. For each of the following regression models, write down the X matrix and vector. Assume in both cases that there are five observations. (a) YB1XB2X2+BXE (b) VYBoB, X,a +2 log10 X2+E regression model never reduces R2, why 3. If adding predictor variables to a...