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In these times many people are growing increasingly concerned about the purity of their drinking water. It's clear to understand why - reports seem to be popping out almost every day describing the quite a few risky metals that will be being present in tap water in most important urban centers in every country.

Are you done with data collection after performing a detailed survey? I am glad to hear that you have completed this time consuming task. Now, do you know what the next step is? Yes, the next step after conducting a survey is data refining. You need to purify your obtained results or data using different techniques. Many students are totally unaware of those techniques. They put their ears on this most important task, hence, fail to grab their desired grades. Keeping this in mind, today's article is for students who do not know the importance of data refining and the ways of doing it. So, let's start discussing the topic with the question