Examlex
A major source of error in observation studies is the interpretation of the meaning of the observation data.
Observing
The act of carefully watching someone or something, often to gain information.
Third Variable
A factor that is not directly involved in an experimental setting but that may affect the relationship between the independent and dependent variables.
Correlation Coefficient
A numerical measure that represents the strength and direction of a relationship between two variables, ranging from -1 to 1.
Placebo Effect
A phenomenon in which a person's condition improves because they believe they are receiving treatment, even though the treatment has no therapeutic value.
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