Define Stratified Sampling and Describe How It Is Done

question 4

Essay

Define stratified sampling and describe how it is done. Differentiate between proportionate or disproportionate stratified sampling and indicate the conditions that might make each most appropriate.

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Definitions:

Single-blind Test

An experimental setup where the participants do not know which group (control or experimental) they belong to, but the researchers do.

Observational Study

A study in which a researcher carefully and systematically observes and records behavior without interfering with the behavior; it may involve either naturalistic or laboratory observation.

Exploratory

Research designed to investigate an area or phenomenon that is not well understood, often used to generate hypotheses for further study.

Experimental

Pertaining to a method of research that tests a hypothesis under controlled conditions.