Which of the following methods are correct for calculating the annual average concentration of a criteria air pollutant?

Question

TuteeHUB · Accepted Answer

Arithmetic mean of minimum 208 measurements in a year at a particular site taken four times a week for 24 hourly sampling at uniform intervals

TuteeHUB · Answer

Arithmetic mean of minimum 104 sampling points in a given area sampled for 24 hours once in a year

TuteeHUB · Answer

Arithmetic mean of minimum 104 measurements in a year at a particular site taken twice a week for 24 hourly sampling at uniform intervals

TuteeHUB · Answer

Arithmetic mean of 365 measurements in a year at a particular site for 24 hourly sampling

1.	Which of the following methods are correct for calculating the annual average concentration of a criteria air pollutant?
A.	Arithmetic mean of minimum 104 sampling points in a given area sampled for 24 hours once in a year
B.	Arithmetic mean of minimum 104 measurements in a year at a particular site taken twice a week for 24 hourly sampling at uniform intervals
C.	Arithmetic mean of minimum 208 measurements in a year at a particular site taken four times a week for 24 hourly sampling at uniform intervals
D.	Arithmetic mean of 365 measurements in a year at a particular site for 24 hourly sampling
Answer» C. Arithmetic mean of minimum 208 measurements in a year at a particular site taken four times a week for 24 hourly sampling at uniform intervals

Discussion