A Tracking Signal Greater Than Zero and a Mean Absolute

Multiple Choice

A tracking signal greater than zero and a mean absolute deviation greater than zero imply that the forecast has:

A) no bias and no variability of forecast error.
B) a nonzero amount of bias and a nonzero amount of forecast error variability.
C) no bias and a nonzero amount of forecast error variability.
D) a nonzero amount of bias and no variability of forecast error.