Question 13 (1 The Absolute percent error for period 4 when Three period moving average forecast method is used:(Please round to 2 decimal places for your answer). Do Not convert to percentage, leave as a decimal value. 3-Period MA x[Time Period) (Sales) Forecast Error 5.8 Absolute Absolute Percent Squared Error Error Error 1 2 7.7 4.2 3 4 5 11.0 15.2 12.2 6 Your