Statistics Sampling

random sample

a sample chosen in such a way that all members of the population have an equal chance of being selected

representative sample

a small proportion of the population that is supposed be representative of the whole population

biased sample

chosen by a method where some members of the population are moe likely to be selected than others

cluster sample

divided into groups and all members of each group are chosen

stratified sample

divided into groups then choose some from each group

simple random sample

gives everyone equal chance of being selected

systematic sample

member chosen using a pattern

convenience sample

members are chosen due to easy access

sample

part of the population being studied

Population

the particular group of objects or people that are being studied

self-selected sample

volunteer to participate