Using the data below, calculate the bias based on using the naive forecast method. Week Time Series Value 6.00 21.00 6.00 15.00 Submit Answer format: Number: Round to: 1 decimal places. Using the data below, what is the value of RMSE? Week Time Series Value Forecast 8.00 2.00 8.00 5.00 Submit Answer format: Number: Round to: 2 decimal places