Given below is the concentration of SO2 in air(in ppm = parts per mill – InterviewSolution

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1.	Given below is the concentration of SO2 in air(in ppm = parts per million) in 30 localities: SO2 concentration (in ppm)Number of localities0.00−0.0440.04−0.0890.08−0.1290.12−0.1620.16−0.2040.20−0.242 Find the mean of SO2 concentration using assumed - mean method.
Answer» Given below is the concentration of SO₂ in air(in ppm = parts per million) in 30 localities: $\begin{matrix} S O_{2} concentration (in ppm) & Number of localities 0.00 - 0.04 & 4 0.04 - 0.08 & 9 0.08 - 0.12 & 9 0.12 - 0.16 & 2 0.16 - 0.20 & 4 0.20 - 0.24 & 2 \end{matrix}$ Find the mean of $S O_{2}$ concentration using assumed - mean method.

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