Answered: Number of Certified Organic Farms in…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

	Number of Certified Organic Farms in the U.S., 2001-2008

	Year	Spending
	2001	5497
	2002	5895
	2003	6570
	2004	6547
	2005	6980
	2006	7857
	2007	9486
	2008	10698

	Source: Statistical Abstract of the U.S., 2011, p. 537.

Fit three trends (linear, quadratic, exponential) to the time series. (A negative value should be indicated by a minus sign. Do not round the intermediate calculations. Round your final answers to 2 decimal places.)


Linear	y_t = x_t +
Quadratic	y_t = x_t²+ x_t +
Exponential	y_t = e^x

(b) Use each of the three fitted trend equations to make numerical forecasts for the next three years. (Round the intermediate calculations to 2 decimal places and round your final answers to 1 decimal place.)

t	Linear	Exponential	Quadratic
9
10
11

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