A time-series plot often helps you determine the appropriate model to use. For this problem, use each
Question:
a. Plot the observed data (Y) over time (X) and plot the logarithm of the observed data (log Y) over time (X) to determine whether a linear trend model or an exponential trend model is more appropriate. (Hint: If the plot of log
Y vs. X appears to be linear, an exponential trend model provides an appropriate fit.)
b. Compute the appropriate forecasting equation.
c. Forecast the value for 2010.
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Related Book For
Basic Business Statistics Concepts And Applications
ISBN: 9780132168380
12th Edition
Authors: Mark L. Berenson, David M. Levine, Timothy C. Krehbiel
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