Analysis of trend Chapter 5
Analysis of trend Chapter 5
Analysis of trend Chapter 5
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Testing for Linear Trend<br />
A way <strong>of</strong> assessing linear <strong>trend</strong> is to use a set <strong>of</strong><br />
coefficients that represents an idealized version <strong>of</strong><br />
a straight line (see Appendix A.3 on p. 577).<br />
Note that there are a-1 number <strong>of</strong> the orthogonal<br />
polynomials.<br />
For our example, this would be:<br />
c 1 c 2 c 3 c 4<br />
-3 -1 1 3
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