The time series regression model contains a variable W and a regression equation of y=200+W+2W2 to forecast future values. If W represents a time period, what is the forecast for time period 2 and the forecast error if the actual value for time period 2 is 210 ? The actual value for time period 3 is 100 . Select the best answer. forecast value =210; forecast error is 110 forecast value =210; forecast error is -110 forecast value =210; forecast error is 0 forecast value =100; forecast error is 0