When determining the concentration of potassium permanganate, three students obtained the following results (mol/l); a) 0.1013; 0.1012; 0.1012; 0.1014 b) 0.1015; 0.1012; 0.1012; 0.1013 c) 0.1013; 0.1015; 0.1015; 0.1013. Calculate Standard Deviation of a Single Definition

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