Question

my expenditure on food by a suitable method.
was collected for 30 localities in a certain city and is presented below
To find out the concentration of SO, in the air (in parts per million, i.e., ppm), the data
Concentration of So, in ppm
0.00-0.04 0.04-0.08 0.08-0.12 0.12-0.16 0.16-1.20 0.20-0.24
Frequency
2
9
9
2
Find the mean concentration of So, in the air.
Free Distribution by A.P. Governmen​

Answer 1

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