The number of plumbing repair jobs performed by Auger's Plumbing Service in each of the last nine months are listed below.
Month | Jobs
--- | ---
March | 353
April | 387
May | 342
June | 374
July | 396
August | 409
September | 399
October | 412
November | 408
a. Assuming a linear trend function, forecast the number of repair jobs Auger's will perform in December using the least squares method.
b. What is your forecast for December using a three-period weighted moving average with weights of .6, .3, and .1? How does it compare with your forecast from part (a)?