Question No: 01 2002bb28213 is a subjective question, hence you have to write your answer in the Text-Field given below. 9761 Forecast sales based on the following data using 2/12/095 (a) Nave Method [2] (b) Three-year average method [3] (c) Exponential smoothing method with a smoothening coefficient of 0.7. Calculate the Root Mean Square Error in each case. [3] Sales Quarter (units) 1 200 23 300 400 4 350 5 350 6 500