Number of Certified Organic Farms
in the United States, 2001–2008 |
| Year | Farms |
| 2001 | 6,375 |
| 2002 | 6,730 |
| 2003 | 7,441 |
| 2004 | 7,425 |
| 2005 | 7,882 |
| 2006 | 8,758 |
| 2007 | 10,297 |
| 2008 | 12,019 |
|
(a) Use Excel, MegaStat, or MINITAB to fitthree trends (linear, quadratic, exponential) to the time series.(A negative value should be indicated by a minus sign. Donot round the intermediate calculations. Round your final answersto 2 decimal places.)
|
| Linear | yt = ____xt + ______ |
| Â Â Quadratic | yt = ____xt2 +_____xt + _____ |
| Â Â Exponential | yt = _____ e____x |
|
(b) Use each of the three fitted trendequations to make numerical forecasts for the next 3 years.(Round the intermediate calculations to 2 decimal placesand round your final answers to 1 decimal place.)
T Linear| Exponential | Quadratic
9 _________ _________ _________
10 _________ _________ _________
11 _________ ___________ _________
