Apple computers has experienced the following monthly demand for the below four months of the year 2018 , in thousands of units. Show each step clearly while answering the questions below. Forecast October Sales volume using each of the following techniques (Note: round all values to two decimal places): a) Nave approach (for a stable series) b) A four-period moving average c) A four-period weighted moving average using 0.4 for the most recent month, 0.2, 0.2, 0.1 for the next most recent months. d) Exponential smoothing with a smoothing constant equal to 0.4 , assuming a June forecast of 30 units e) Linear Trend Equation f) Compare the forecast accuracy for a MSE metric using Exponential smoothing, and Linear Trend. Which among the two is a better technique for this data