Statnote 19: non-linear regression: fitting an exponential curve to data

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Abstract

Non-linear relationships are common in microbiological research and often necessitate the use of the statistical techniques of non-linear regression or curve fitting. In some circumstances, the investigator may wish to fit an exponential model to the data, i.e., to test the hypothesis that a quantity Y either increases or decays exponentially with increasing X. This type of model is straight forward to fit as taking logarithms of the Y variable linearises the relationship which can then be treated by the methods of linear regression.

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Original languageEnglish
Pages44-45
Number of pages2
Volume2009
JournalMicrobiologist
Publication statusPublished - Dec 2009

    Keywords

  • non-linear relationships, microbiological research, statistical techniques, non-linear regression, curve fitting, exponential model to the data, linear regression

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