What is selection bias in surveys?

What is selection bias in surveys?

Selection bias occurs when the sample chosen for a survey is not representative of the population intended to be analyzed.

Can you give me an example of selection bias?

Sure! If a survey about health habits only includes responses from gym members, it may not reflect the habits of the general population.

How can we avoid selection bias in surveys?

To avoid selection bias, ensure random sampling, use stratified sampling techniques, and include diverse demographic groups.

What are the consequences of selection bias?

Selection bias can lead to inaccurate conclusions, misinforming policy decisions and skewing research results.