1.3: Data Collection and Design Flashcards
1
Q
The two categories of statistical studies
A
Observational study and experiment
2
Q
Observational study
A
A researcher does not influence the responses
3
Q
Experiment
A
Deliberately applies treatment before observing responses
4
Q
Stratified sample
A
The sample has members from each segment of the population, ensures that each segment of the pop. is represented
5
Q
Cluster sample
A
When the population falls into naturally occuring subgroups having similar characteristics
6
Q
Systematic sample
A
A sample in which each member of the population is assigned a number.
7
Q
Simple random sampling
A
A sample in which every possible sample of the same size has the same chance of being selected
