In Chapter 3 of William Stevenson's Operations Management case study Highline Financial Services, Ltd. I have been trying to work through the intuitive forecasting but can not come up with the same answers as the study guide. What types of intuitive forecasting are being used? I think I understand the formula used for Service C but I can't figure out how you arrive at the answers for Services A & B. Scenario-Examine the demand this company has experienced for the three categories of service it offers over the preceding 2 years. Assuming nothing changes in terms of advertising or promotion, and competition doesn't change, predict demand for the services the company offers over the next 4 quarters. Note there are not enough data to develop seasonal relatives. Nonetheless, you should be able to make reasonably good, approximate intuitive estimates of demand. What general observations can you make regarding demand?

Quarter Period Service A Service B Service C

1 1 60 95 93

2 2 45 85 90

3 3 100 92 110

4 4 75 65 90

1 5 72 85 102

2 6 51 75 75

3 7 112 85 102

4 8 85 50 100

A-Answer from study guide is 83, 57, 128, 96

B-Answer from study guide is 67, 54, 66, 36

Thank you for your insight.