What is negative selection bias?

Negative selection bias occurs when data or results are skewed because of non-random sampling. In a podcast discussion, Kyle Polich used an example where a poll in different locations would lead to biased results due to the specific demographics of those areas. This type of bias, also known as sampling bias, happens when the sample is not representative of the broader population, which can significantly affect the accuracy and reliability of study outcomes or surveys 1 2.