To find out the concentration of `S O_2`in the air (in parts per million, i.e., ppm), the data was
Channel: Doubtnut
Date: 05/07/2020

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.