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      Chapter

      What are you measuring?
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      Chapter

      What are you measuring?

      DOI link for What are you measuring?

      What are you measuring? book

      What are you measuring?

      DOI link for What are you measuring?

      What are you measuring? book

      ByJack Cohen, Graham Medley, Ian Stewart
      BookStop Working & Start Thinking

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      Edition 2nd Edition
      First Published 2005
      Imprint Taylor & Francis
      Pages 13
      eBook ISBN 9780203028148
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      ABSTRACT

      Variability is the common thread of biology, and the most variability is usually found between individuals, the issue of sampling and inference is crucial to most of biology. All the other sciences further ‘downstream’ where the variability rules have inherited the methods used initially within biology. The usual and very nearly always the best, way round the problem of inherent variability is randomisation – using chance to even things out. Randomisation cannot reduce the noise, but it can reduce the chance that it biases the results. Whatever the actual situation, in postgraduates’ experiments, it is likely that the outcome variable in the experiment will have some distribution. The whole purpose of controlling experiments by introducing parameters is to reduce the amount of variability within postgraduates’ measurement. The mathematics of the normal distribution has been very well worked out, and much of statistical analysis relies on the normal distribution.

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