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In article it is told about use of methods of correlation and regression analysis when determining functional dependence between values. When studying different objects of a research in laboratory or working conditions there is a need of establishment of the most probable interrelations and interdependence between two or more variable. Sometimes it happens simply as communication easily is found or is in advance known from any theoretical premises. However identification of such communications between different indicators, factors is much more often, signs is extremely difficult task. Researchers face need of introduction of some hypothesis of the nature of communication in the form of functional dependence, i.e. approximation by its some rather simple mathematical expression, for example, linear equation or a polynomial. Methods of correlation and regression analyses are very useful to search of such mathematical functional or structural dependences between two or more variable (on the savedup experimental data).

vìsnik nacìonalʹnogo tehnìčnogo unìversitetu «hpì». serìâ: ìnnovacìjnì doslìdžennâ u naukovih robotah studentìv/vestnik nacionalʹnogo tehničeskogo universiteta "hpi". innovacionnye issledovaniâ v naučnyh rabotah studentov

USING OF METHODS OF CROSS-CORRELATION AND REGRESSIVE ANALYSIS FOR DETERMINATION OF FUNCTIONAL DEPENDENCE BETWEEN SIZES