The January stock market Some people think that the behavior of the stock market in January predicts its behavior for the rest of the year. Take the explanatory variable x to be the percent change in a stock market index in January and the response variable y to be the change in the y index for the entire year. We expect a positive correlation between x and y because the change y during January contributes to the full year's change. Calculation from data for an 18-year period gives x = 1.75% S,= 5.36% y = 9.07% $y = 15.35% r=0.596 Find the equation of the least-squares line for predicting full-year change from January change. Show your work.