Question

The following table shows the sales data of server computers of Ziffcore Inc. for the past 5 years. The management plotted the data on a chart. The chart suggested that the sales appear to be increasing in a fairly predictable linear fashion and that the sales are related to time by a linear function Yt =240+340t. Using simple linear regression, calculate the forecast for sales in year 6.

YearSales
1580
2920
31260
41600
51940

a. The forecast for sales in year 6 is more than 1800 but less than or equal to 2000.

b. The forecast for sales in year 6 is more than 2000 but less than or equal to 2200.

c. The forecast for sales in year 6 is more than 2200 but less than or equal to 2400.

d. The forecast for sales in year 6 is more than 2400 but less than or equal to 2600.

Answer

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