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What is the average density of continental crust?
Historical Data
Information collected about past events and conditions pertaining to a particular subject.
Nonresponse Error
Bias introduced in survey results when a significant number of invited participants decide not to respond.
Coverage Error
A statistical error that occurs when some members of a population are inadequately represented in a sample.
Sampling Frame
A Sampling Frame is a list or database from which a sample, or a smaller group representative of the larger population, is drawn for the purpose of conducting research.
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