The following table shows predicted product demand using your particular forecasting method along with the actual demand that occurred:

FORECAST	ACTUAL
1,510	1,550
1,410	1,530
1,710	1,615
1,760	1,665
1,810	1,715

a. Compute the tracking signal using the mean absolute deviation and running sum of forecast errors. (Negative values should be indicated by a minus sign. Round your "Mean Absolute Deviation", "Tracking Signal" to 2 decimal places and all other answers to the nearest whole number.)

Period	Forecast	Actual	Deviation	RSFE	Absolute Deviation	Sum of Absolute Deviation	MAD	TS
1	1,510	1,550
2	1,410	1,530
3	1,710	1,615
4	1,760	1,665
5	1,810	1,715