State water was determined in seven replicate measurements

Reference no: EM13185972

The concentration of tin lead in drinking water was determined in seven replicate measurements with the following results (in ppb): 1.84; 1.92; 1.94; 1.92; 1.85; 1.91; 1.97. What is the standard deviation of these measurements in ppb?

Reference no: EM13185972

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