Question: Question 3 Using the same data in table 2, a) Use the technique of least squares method, find the trend line b) Find the trend

Question 3 Using the same data in table 2, a) Use the technique of least squares method, find the trend line b) Find the trend values c) Forecast the sales for 2021 second quarter. d) Plot the time series data and trend line. Question 4 Using the same data in table 2, estimate the season variation component (S).

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