A specification of how a researcher measures a research variable is known as a(n)
A) standard deviation.
B) control condition.
C) replication.
D) operational definition.
E) observation.
Answer: D
A specification of how a researcher measures a research variable is known as a(n)
A) standard deviation.
B) control condition.
C) replication.
D) operational definition.
E) observation.
Answer: D