Dictionary of Human Evolution and Biology

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Logarithm

Exponent of the power to which a base number must be raised to equal a given number. There are two common bases used in biology: 10 and e(2.718282), called the common logarithm and the natural (or Naperian) logarithm, respectively. The common logarithm of the number 100 to the base 10 is 2 (100 102); the natural logarithm of the number 100 to the base e is 4.605 (100 2.7182824.605). Aka log. Logarithms are used in biology to describe aspects of growth (logistic growth) or for logarithmic transformation.

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