1. biased sample2. convenience sample 3. unbiased sample 4. self-selected sample 5. stratified sample 6. systematic sample a. members are selected from the different subgroups within a population. b. sample where representatives are easily accessible. c. sample where every member of the population has an equal chance of being selected. d. sample members are selected through the use of a rule. e. sample not representative of the entire population. f. sample where members volunteer to take part.