A Stratified Sample Differs from a Quota Sample as in a Stratified

question 86

Multiple Choice

A stratified sample differs from a quota sample as in a stratified sample:

• A)researchers handpick participants from among selected segments or groups with certain characteristics.
• B)researchers select a sample of subgroups from which they draw respondents.
• C)researchers select participants from among readily available respondents.
• D)researchers select subsamples by a random process.

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Definitions:

Biotic

Relating to or resulting from living things, especially in their ecological relations.

Ecosystems

Communities of living organisms in conjunction with the nonliving components of their environment, interacting as a system.

Pyramid of Biomass

A depiction of the decreasing mass of organisms found as one ascends through the food chain.

Pyramid of Energy

A graphical representation that shows the flow of energy at different trophic levels in an ecosystem, with the largest amount of energy at the base and decreasing amounts as you move up.