Using the data below, calculate the bias based on using the nave forecast method. Week 1 2 Time Series Value 21.00 15.00 3 19.00 Submit 5.00 Answer format: Number: Round to: 1 decimal places. Using the data below, calculate the bias based on using the nave forecast method. Week 1 2 Time Series Value 21.00 15.00 3 19.00 Submit 5.00 Answer format: Number: Round to: 1 decimal places.