1.3 Data Collection

Question 1

Observational Study

Answer 1

A researcher observes and measures characteristics of interest of part of a population

Question 2

Experiment

Answer 2

A treatment is applied to part of a population and responses are observed

Question 3

Simulation

Answer 3

Use of a mathematical or physical model to reproduce the conditions of a situation or process

Question 4

Survey

Answer 4

Investigation of one or more characteristics of a population

Question 5

Census

Answer 5

Is a count or measure of an entire population

Question 6

Sampling

Answer 6

Is a count or measure of part of a population

Question 7

Biased Sample

Answer 7

Is one that is not representative of the population from which it is drawn

Question 8

Random Sample

Answer 8

One in which every member of the population has an equal chance of being selected

Question 9

Simple Random Sample

Answer 9

Is a sample in which every possible sample of the same size has the same chance of being selected.