What are the advantages and disadvantages of sampling surveys?

Sampling has a variety of benefits and drawbacks. Some of them are pointed out below: Advantages:

• Since the sample size is less than the entire population, it keeps costs and time down and produces findings more quickly.
• Since sampling is carried out by skilled and knowledgeable investigators, the results are more reliable.
• Sampling is the ideal method when there is a huge population.
• A sample makes it possible to calculate sampling errors. As a result, it helps in learning about various demographic aspects of the population.
• Because samples are modest in size, studying them takes less room and equipment.
• Sampling works best when there are few resources available.

Disadvantages: The potential for discrimination is the sample's biggest drawback. But with so many benefits, sampling is the ideal course of action for a research project.

• Chances of bias.
• Difficulties in selecting truly a representative sample.
• Subject-specific knowledge is required.
• changeability of sampling units.
• impossibility of sampling.