Industrial Automatic Control Systems and Controllers Annotation << Back Approximation of the Distribution of the Measurement Error of Characteristics of Petroleum Products A.A. Moiseev Here presented the analysis of errors distributions for measurements such oils characteristics as density, viscosity, solvent strip and fl are temperatures. Errors distributions normality was checked using χ2 method, which indicated the abnormality of correspondent distributions. In this situation different approximations for these distributions were built and studied. Some details of their parameterization method are presented too. Keywords: oil; density; viscosity; temperature distillation; fl ashpoint; error; frequency histogram; sampling distribution; a normal distribution; Method χ2; approximation. Contacts: E-mail: slow.coach@yandex.ru Pp. 25-33.