The Purpose of Sampling Is to Select a Set of Elements

question 2

Multiple Choice

The purpose of sampling is to select a set of elements from a population so that the descriptions of the sample statistics accurately portray the parameters of the population. This is best achieved through the use of ____.

• A) a convenience sample
• B) random selection
• C) the sampling element
• D) sampling error

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Definitions:

Secretion

The process by which substances are produced and released from cells or glands, often for specific functions in the body, such as digestion or hormone regulation.

Neurotransmitter

A chemical substance released at the end of a nerve fiber by the arrival of a nerve impulse and, by diffusing across the synapse or junction, causes the transfer of the impulse to another nerve fiber, a muscle fiber, or some other structure.

EPSP

Excitatory Postsynaptic Potential; a temporary increase in postsynaptic membrane potential due to the flow of positively charged ions into the postsynaptic cell, making it more likely to fire an action potential.

Voltage Change

A change in the electrical potential difference across a membrane, which can initiate an electrical signal or action potential in neurons and other excitable cells.