Question

Is this better?

3. Calculate a Nine Week Simple Moving Average
4. Plot your Nine Week Simple Moving Average on same worksheet as your original forecast
Products Sold Per Week [ 800 ] [ 600 ] [ 200 ] 3/1

Answer 1

Using the linear regression model, the sales predictions for day 60 and day 90 are $250.12k and $324.52k, respectively, when substituting the days into the equation îy = 101.32 + 2.48x.

Step-by-step explanation:

To calculate sales predictions for specific days using the provided linear regression model, îy = 101.32 + 2.48x, where îy represents the sales in thousands of dollars, and x is the day within the 90-day period. To predict the sales on day 60, we substitute x with 60 and for day 90, we replace x with 90 in the linear model.

To calculate the sales prediction for day 60:

• îy = 101.32 + 2.48(60)
• îy = 101.32 + 148.80
• îy = 250.12

• To calculate the sales prediction for day 90:
  îy = 101.32 + 2.48(90)
• îy = 101.32 + 223.20
• îy = 324.52

The sales predictions in thousands of dollars for day 60 and day 90 are $250.12k and $324.52k, respectively.