кореляційний аналіз

 This study assesses the hydrochemical dynamics of the Rika and Tereblia Rivers in Ukraine to evaluate water quality trends. Key water quality parameters, including biological oxygen demand, dissolved oxygen, total suspended solids, ammonium, nitrate, nitrite, phosphate, and sulphate, were analysed over a 10-year monitoring period. Statistical tools, such as Pearson correlation and regression analysis, were applied to determine relationships among these parameters and identify pollution sources.

Correlations between the heights of equipotential and physical surface of the Earth, Venus, Mars and the Moon were investigated by the comparative analysis. Physical interpretation of the data obtained was given. It was shown that the large-scale topographic features of the Moon, Mars and Venus affect the gravitational figures of these bodies to a considerably greater extent than the terrestrial ones which are almost completely compensated.