Double exponential smoothing (Holts model)
Consider the following data:
a. Use least square method to compute the sales forecast for the month of December.
b. Use Holts method to update the estimates of slope and intercept based on the above data. value of
c. What are one step ahead and two-step ahead forecast that Holts method gives for the number of visitors in September and October
d. What is the forecast for the visitors made at the end of July for the month of December
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