Selection Bias Occurs When ________

question 85

Multiple Choice

Selection bias occurs when ________.

• A) the population has been divided into strata
• B) portions of the population are excluded from the consideration for the sample
• C) cluster sampling is used instead of stratified random sampling
• D) those responding to a survey or poll differ systematically from the nonrespondents

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Definitions:

Spinal cord

The cylindrical bundle of nerve fibers and associated tissue that is enclosed in the spine and connects nearly all parts of the body to the brain.

Frontal lobe

The part of the brain located at the front of each cerebral hemisphere, associated with reasoning, motor skills, higher level cognition, and expressive language.

Motor activity

Physical movements and actions generated by the body's muscle system.

Brain

An organ of the central nervous system in vertebrates, located in the skull and functioning as the primary center for controlling bodily activities and cognitive functions.