How to calculate the weightage of parameters in the weighted arithmetic water quality index (WQI) method?

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Rahul Kumar

Which one (assigned weight or relative weight) you are asking about?

Engku Muhamad Faris

Maybe you can try DFA followed by computation of potency index, or via PCA to obtain the weights for your WQ parameters.

perhaps this article would help

http://citeseerx.ist.psu.edu/viewdoc/download;jsessionid=0FB8D7426F7ADD2186A76177C79A6097?doi=10.1.1.677.2210&rep=rep1&type=pdf

Asif Mahmud

At first, calculate the PC of all parameters and sum up the F1 values of selected parameters (normally the highest F1 valued parameters select for WQI operation).

After that, divide each parameter's F1 values by the calculated sum value.

These results are the weight values for the WQI calculation.