Examlex
What objects are used to determine that the galaxy is mostly dark matter?
Relationships
Connections or associations between individuals, based on feelings, interactions, and social bonds.
Volunteer Bias
The tendency for volunteers, such as in research studies, to differ from the general population in significant ways, potentially skewing results.
Random Sampling
A method of selecting a sample from a population in which every individual has an equal chance of being chosen.
Correlation Coefficient
A number between −1.00 and +1.00 that indicates the direction (negative or positive) and extent (from none to perfect) of the relationship between two variables.
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