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A Note on the Use of a Logarithmic Time Trend

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  • Watts, Geof
  • Quiggin, John C.

Abstract

It is shown that parameter estimates in a regression with a logarithmic time trend are not invariant to the choice of the starting point of that time trend. Possible solutions to this problem are discussed and applied to data from a recent article in this Review where a logarithmic time trend was included. It is suggested that the appropriate course is either to estimate the starting date directly or to adopt a functional form invariant to the choice of starting date.

Suggested Citation

  • Watts, Geof & Quiggin, John C., 1984. "A Note on the Use of a Logarithmic Time Trend," Review of Marketing and Agricultural Economics, Australian Agricultural and Resource Economics Society, vol. 52(02), pages 1-9, August.
    • Handle: RePEc:ags:remaae:12259
    DOI: 10.22004/ag.econ.12259
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    File URL: https://ageconsearch.umn.edu/record/12259/files/52020091.pdf
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    1. repec:bla:ecorec:v:58:y:1982:i:160:p:61-72 is not listed on IDEAS
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    Cited by:

    1. Moschini, GianCarlo & Moro, D., 1993. "Food Demand System for Canada, A," Staff General Research Papers Archive 12753, Iowa State University, Department of Economics.
    2. Chang, Yoosoon & Kim, Chang Sik & Miller, J. Isaac & Park, Joon Y. & Park, Sungkeun, 2016. "A new approach to modeling the effects of temperature fluctuations on monthly electricity demand," Energy Economics, Elsevier, vol. 60(C), pages 206-216.
    3. Adams, Philip D., 1988. "Some Comparisons of Recent Estimates of Agricultural Supply Elasticities for the Australian Economy," Review of Marketing and Agricultural Economics, Australian Agricultural and Resource Economics Society, vol. 56(03), pages 1-9, December.
    4. Griffiths, William E. & O'Donnell, Christopher J. & Cruz, Agustina Tan, 2000. "Imposing regularity conditions on a system of cost and factor share equations," Australian Journal of Agricultural and Resource Economics, Australian Agricultural and Resource Economics Society, vol. 44(1), pages 1-21.
    5. Gilmour, Brad & Fawcett, Peter, 1986. "The Relationship Between American and Canadian Wheat Prices," Working Papers 243885, Agriculture and Agri-Food Canada.
    6. Cahill, Sean & Hazledine, Tim, 1989. "Structure, Costs and Performance in Canadian Food and Beverage Industries: Intra-Industry and Inter-Industry Studies," Working Papers 244044, Agriculture and Agri-Food Canada.

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    Keywords

    Research Methods/ Statistical Methods;

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