Question: Given the data: Month Feb. Mar. Apr. May Jun. Jul. Aug. Sales (000 units) 19 18 15 20 18 22 20 1. Plot the

Given the data: Month Feb. Mar. Apr. May Jun. Jul. Aug. Sales (000 units) 19 18 15 20 18 22 20 1. Plot the

Given the data: Month Feb. Mar. Apr. May Jun. Jul. Aug. Sales (000 units) 19 18 15 20 18 22 20 1. Plot the time-series data to identify any possible pattern. 2. 3. Using a 5-month moving average, forecast sales for September. Assuming an initial forecast of 19(000) units for March, forecast sales for September with a smoothing constant (a) of 0.20 and compute the MAD and MSE for the smoothed values used as forecasts. 4. Fit a trend line to the time-series and determine the values a and b for the trend equation. What will be a forecast for September with this trend equation? 5. Judging from the results above, is there a clear trend in the sales?

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