Examlex
Unlike other relaxation techniques, mental imagery does not require concentration.
Covariance
A statistic that indicates the degree to which two variables vary together.
Nonlinear Relationship
A type of relationship between two variables where there is not a straight-line or proportional association.
Null Hypothesis
A hypothesis that suggests no significant difference or effect in a study.
Correlated
When two or more variables are related in some way, showing a tendency to vary together.
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