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:

Extracellular

Existing or occurring outside a cell or cells.

Na+

Sodium ion, an essential electrolyte involved in maintaining fluid balance, nerve transmission, and muscle function.

Bicarbonate Ion

Anion (HCO3−) remaining after the dissociation of carbonic acid.

Plasma

The liquid component of blood, in which blood cells and other particles are suspended, consisting mostly of water, proteins, and other solutes.