Collection of Data — Economics STD 11 Commerce — Question

In certain specific conditions use of census method is impossible or highly inappropriate. For example, if one wants to check the quality of rice or wheat, it is impossible to check each and every grain.
Also, if one goes to purchase sweets, then the shopkeeper will give only a piece to taste. In these cases, the use of census method will be impossible Sampling method in these cases, becomes a necessity. Also, census method is inappropriate if the population is infinite or there are limited resources and a fixed time frame. In these conditions, use of sampling method is inevitable.