STATUS OF SURFACE AND GROUND WATER QUALITY OF MANDIAKUDAR - PARTIII : CORRELATION COEFFICIENT AND REGRESSION EQUATIONSMAHUYA DASGUPTA ADAK AND K.M. PUROHITAbstract Evaluation of different physico-chemical parameters, of surface water and ground water samples of Mandiakudar, Orissa, are carried out during March 1999 to February 2000. The average (TO, variance (S2), standard deviation (S) and standard error (Sm) values are calculated for twenty different parameters. A systematic calculation is also made for evaluating the correlation coefficient 'r' amongst the parameters. Significant linear relationships among some water quality parameters are also carried out. Experimental results are compared with the calculated values using equation : Y = AX + B. These regression equations are obtained from the best-fit curves using the software package EXCEL.
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