Merits and demerits of sample survey?

Answer 1

Sample surveys are a valuable research tool as they allow researchers to collect data from a subset of a population, providing insights that can be generalized to the larger group. They are cost-effective, efficient, and can provide a snapshot of public opinion. However, sample surveys can be prone to sampling bias if the sample is not representative of the population, leading to inaccurate results. Additionally, survey responses may be influenced by respondent bias or social desirability bias, affecting the validity of the data collected.

Answer 2

Merits: Sample surveys are cost-effective, time-efficient, and allow for data collection from a large population subset. They can provide valuable insights into attitudes, opinions, and behaviors.

Demerits: Sample surveys may suffer from sampling bias, leading to results that are not representative of the population. There can also be issues with survey design, response rates, and interpretation of results.

Answer 3

Merits: Quicker and cheaper than a census.

Demerits: Estimates for population parameters are only approximate. These can be quite poor if sample is unrepresentative.