A Company Has Developed a Linear Trend Model to Forecast

Multiple Choice

A company has developed a linear trend model to forecast monthly sales.The following data show the actual sales and the "fitted" sales for months 1-12. Based on these data,what is the mean square error for the linear trend model?

A) Approximately 7,968
B) About 99,615
C) Nearly 18,000
D) None of the above.