To find out the concentrations of `S O_2` in the air (in parts per million, i.e., ppm), the data was collected for 30 localities in a certain city and is presented below: Concentration of `S O_2` (in ppm) Frequency 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 Find the mean concentration of `S O_2` in the air.

To find out the concentration of SO_(2) in the air (in parts per million , I . e., ppm) , the data was collected for 30 localities in a certain city and is presented below :

To find out the concentration of S O_2 in the air (in parts per million, i.e., ppm), the data was collected for 30 localities in a certain city and is presented below: Find the mean concentration of S O_2 in the air.

To find out the concentration of S O_2 in the air (in parts per million, i.e., ppm), the data was collected for 30 localities in a certain city and is presented below:Find the mean concentration of S O_2 in the air.

To find out the concentration of SO_(2) in the air (in parts per million, i.e., ppm), the data was collected for 30 localities in a certain city and is presented below: Find the mean concentration of SO_(2) in the air.

To find out the concentration of SO_(2) in the air (in parts per million, i.e, ppm), the data was collected for 30 localities in a certain city and is presented below : Find the mean concentration of SO_(2) in the air.

To find out the concentration of SO_(2) in the air (in parts per million, i.e., ppm), the data was collected for 30 localities in a certain city Find the mean concentration of SO_(2) in the air.

To find out the concentrations of SO_(2) in the air (in parts per million, i.e., ppm) the data was collected for 30 localities in a certain city and its presented below : {:("Concentration of "SO_(2) "(in ppm) ",0.00-0.04,0.04-0.08,0.08-0.12,0.12-0.16,0.16-0.20,0.20-0.24),("Frequency "," "4," "9," "9," "2," "4," "2):} Find the mean concentration of SO_(2) in the air