Yes, samples survey provide better results than census. A sample refers to a group or section of the population from which information is to be obtained. A good sample is generally smaller than the population and is capable of providing ‘ reasonably accurate information about the population at a much lower cost and shorter time.
Suppose you want to study the average income of people in a particular state, according to the census method, we need to find out the income of every individual in the region, add them up and divide by number of individuals to get the average income of people in the state. This method would require huge expenditure, as a large number of investigators are to be employed.
Alternatively, if a representative sample of few individuals is selected from the state to find their income, it saves time, money and energy in the process of determination of income.
To sum up, sampling is considered a better method due to following reasons:
- It is more economical than the other techniques of collection of data.
- Sample investigation can be done at a greater speed as it consumes less time.
- When sampling is conducted scientifically and carefully, it gives accuracy.
- Planning, organization and supervision can be conveniently managed which leads to administrative convenience.
