S ( Z - µZ ) Equals _________

question 27

Multiple Choice

S ( z - µz ) equals _________.

• A) 0
• B) 1
• C) the variance
• D) cannot be determined

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Definitions:

Representative Sample

A fraction of a population that reliably reflects the traits of the entire group.

Random Sample

A method of selecting a subset of individuals from a population in which each person has an equal chance of being chosen.

Double-Blind Experiment

An experimental design in which neither the participants nor the experimenters know who is receiving a particular treatment, to prevent bias.

Case Study

A detailed analysis of a person, group, event, or situation over a period of time, used as a research method in psychology and other disciplines.