Research library.
Choose a concept. Read the definition, explore an example and test your understanding.
7 concepts
Sampling3 min read
Sample
A small part selected to help us understand the whole.
Beginner
Sampling2 min read
Population
Who do you want your findings to describe?
Beginner
Sampling3 min read
Random sampling
Keep personal preferences out of selection.
Intermediate
Sampling2 min read
Stratified sampling
Sample from every subgroup.
Beginner
Sampling2 min read
Cluster sampling
Select groups before individual units.
Beginner
Sampling2 min read
Convenience sampling
Recruit the people easiest to reach.
Beginner
Sampling2 min read
Weighting
Adjust how much each observation contributes to an estimate.
Intermediate