Accurate estimation of standard deviations for quantitative methods used in clinical chemistry.

@article{Burnett1975AccurateEO,
  title={Accurate estimation of standard deviations for quantitative methods used in clinical chemistry.},
  author={Robert W. Burnett},
  journal={Clinical chemistry},
  year={1975},
  volume={21 13},
  pages={1935-8}
}
Although the standard deviation is the most widely used measure of the precision of quantitative methods, there is a need to re-examine the conditions necessary to obtain a meaningful estimate of this quantity. The importance of the material to be sampled, the sample size, the calculation of confidence intervals, and the segregation of outliers are discussed. 

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