To give you more time to work on your projects, this homework is limited to one problem.
Extra credit is below.
Some red spruce forests in the Appalachian Mountains show signs of decline, with many dead or dying trees. Write out the fitted regression equation, and interpret the values of the Y -intercept, both regression coefficients, and R 2 . That is, each region is represented by its own slope and its own intercept. Write out the regression equation. Write out the regression equation in each case and explain.