Sampling Bias: This term refers to when certain members of a population are more likely to be included in a sample than others, leading to an unrepresentative sample.
Random Sampling: This method involves selecting individuals from a population at random, ensuring each member has an equal chance of being chosen for the sample.
Stratified Sampling: In stratified sampling, researchers divide the population into subgroups or strata based on specific characteristics and then randomly select participants from each subgroup to create a representative sample.