Question: *Please show in excel step by step* A retail store sells space heaters. Sales data for space heaters is provided: A B C Year Quarter

*Please show in excel step by step*

A retail store sells space heaters. Sales data for space heaters is provided:

*Please show in excel step by step* A retail

*Please show in excel step by step* A retail

A B C Year Quarter 1 1 Sales 826 480 1 2 1 3 725 1 4 2 1 436 1041) 773 876 2 2 3 4 545) 1 wwwwNN 2 1135 9521 1141 727 3 4 a. Plot the time series. Describe the time series in a few sentences. b. Calculate the seasonal index for each quarter. What are the implications of these indexes? Calculate the trend equation for this data. Explain what the slope and intercept mean in this context. d. Using the multiplicative decomposition method calculate forecasts for each quarter of Year 4.1

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