1. What does the y-intercept of a regression equation represent?
the predicted level of X when y equals 1
the predicted level of y when x equals 1
the predicted level of X when y equals zero
the predicted level of y when x equals zero
2. Using moving averages for n = 2 and n = 3 will produce what types of forecasts?
equally accurate forecasts
widely varying forecasts
forecasts with small variances
forecasts with statistical differences