| Popis: |
This chapter discusses the Poisson's distribution and binomial distribution. In analysis the results of measurement are often discrete quantities. This is the case, for example, in the measurement of radioactivity in radio chemical analyses, in measurements of the intensity of radiation in X-ray and optical spectroscopy with counters of quanta— quantometric methods of optical analyses, and in the study of the distribution of structural components on a slide. The results of semi-quantitative analysis are always a sequence of discrete values, irrespective of the method by which semi-quantitative analysis is carried out. In all of these cases, the experimental material can be described with the help of Poisson's distribution. The possibility of approximate representation of Poisson's distribution with the help of normal distribution considerably facilitates conducting statistical analysis; several examples are presented in the chapter relating to this. The chapter also discusses the evaluation of the results of semi-quantitative determinations with the help of Poisson's distribution. |
