Question: it a simple linear regression model to the sales data. Note: Do not round intermediate calculations. Round your final answers to 2 decimal places. In

it a simple linear regression model to the sales data.

Note: Do not round intermediate calculations. Round your final answers to

2

decimal places.

In addition to the regression model, determine multiplicative seasonal index. A full cycle is assumed to be a full year.

Note: Do not round intermediate calculations. Round your and final answers to

2

decimal places.

Prepare sales forecasts for next year using both of your regression models derived above to show results both with and without adjustments for seasonality.

Note: Do not round intermediate calculations. Round your final answers to

1

decimal places.

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