To calculate the 2-period moving average forecast for the 3rd week, we will use the values from Week 1 and Week 2 since we're forecasting for Week 3.
The 2-period moving average is calculated as follows:
\[ \text{Moving Average} = \frac{\text{Value in Week 1} + \text{Value in Week 2}}{2} \]
Using the values provided:
- Value in Week 1 = 9.00
- Value in Week 2 = 20.00
Calculating the moving average:
\[ \text{Moving Average} = \frac{9.00 + 20.00}{2} = \frac{29.00}{2} = 14.50 \]
Thus, the 2-period moving average forecast for the 3rd week is 14.50.