1. A certain restaurant offers lamb barbecue on its Friday menu. This dish has been ordered by 75, 64, 68 and 70 customers for the past four weeks. Build a forecast for next week's demand using a four-term moving average.
2. The price per ounce of silver on the first day of transactions of each month, during the last 14 months is shown below

month: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14

price per ounce: 254.82, 280.49, 273.28, 286.18, 307.85, 322.37, 372.10, 361.67, 371.97, 333.55, 349.12, 337, 362.26, 365.08

With a 10-term moving average, forecast the price per ounce of silver for the following month.

3- Data collected from the annual demand for 50-pound bags of fertilizer at Wallace Garden is presented in the following table. Develop a 3-year moving average to estimate sales for years 4-12. Then estimate demand again with a weighted moving average where sales for the most recent year weigh 2 and sales for the other 2 years each has a weight of 1. What method do you think is the best?

year: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11

fertilizer demand(thousands of bags): 4, 6, 4, 5, 10, 8, 7, 9, 2, 14, 15

4- Using the data from exercise 3) develop a trend line. Thus, there are three different forecasts for fertilizer demand (3-year moving averages, 3-year weighted moving averages and the trend line). Which of the three do you consider to be the best and why?