How Are Cases Chosen for a Random Sample

question 27

Multiple Choice

How are cases chosen for a random sample?

• A) so that each case has an equal chance of being selected
• B) by preconceived ideas of which cases will support the hypothesis
• C) on the basis of some standard criterion, such as size of population
• D) from among materials the researcher happens to have at home or in the office

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Definitions:

Water Potential

A measure of the potential energy in water, influencing how water moves through an environment or organism.

Epidermis

The outer layer of cells covering an organism, particularly the surface epithelium of the skin of animals or the outermost layer of plants.

Eudicot Stem

The stem structure of a eudicot plant, characterized by the arrangement of vascular bundles in a ring.

Pith

The central core of the stems of vascular plants, composed of soft, spongy parenchyma cells that store and transport nutrients throughout the plant.