railway RRB JE (CBT I + CBT II) Mock Test 2024 Industrial Engineering Production Planning and Inventory Control Forecasting
A TV seller predicts the demand at the rate of 600 units per month for the next four months. Actual demand is found 500, 680, 800 and 900 units, respectively. The mean absolute deviation (MAD) and the BIAS are ________ and ________, respectively.
1
170, -120
2
-170, 120
3
170, 120
4
120, 170