Examlex
Summarize the research on the effectiveness of various types of psychotherapy, and on the effectiveness of psychotherapy in general.
Contingency Table
A data table that displays the frequency distribution of the variables.
Expected Frequency
In statistics, the predicted count of occurrences in a category of a contingency table based on probabilities derived from a theoretical distribution.
Sample Size
The number of observations or replicates included in a statistical sample, influencing the study's precision and conclusions.
Null Hypothesis
A hypothesis that assumes no significant difference or relationship between variables, serving as the default position that indicates no effect or change.
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