Random Sampling

question 32

Multiple Choice

Random sampling

• A)is most likely to produce a sample that truly represents the population.
• B)is the same as quota sampling.
• C)requires less work than nonrandom sampling.
• D)is similar to black versus white.

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Definitions:

Superposition

A principle in geology stating that in an undeformed sequence of sedimentary rocks, each layer is older than the one above it and younger than the one below it.

Cross-Cutting Relations

The principle that a geologic unit or feature is older than a rock or feature that crosscuts it.

Igneous Intrusion

The process where magma from the Earth's mantle cuts through or intrudes into the Earth's crust, eventually cooling and solidifying to form igneous rock.

Cross-Cutting Relations

A principle in geology that an igneous intrusion or fault must be younger than the rocks it intrudes or displaces.