Selection Bias Occurs When ___________________

question 39

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 non-respondents

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Definitions:

Unconditioned Response

A natural, unlearned reaction to an unconditioned stimulus that occurs automatically without previous conditioning.

Conditioned Response

A learned response to a previously neutral stimulus through conditioning.

Unconditioned Response

This is an automatic, natural reaction to a stimulus that occurs without prior learning or conditioning.

Sneezing

An involuntary burst of air through the nose and mouth, usually caused by irritation of the nasal mucosa.