Examlex
Match the following terms with their descriptions:
I. Composite key
II. Non-key field
III. Index
IV. Anomaly
V. ACCDE
A. Any key which is not a part of the primary key
B. Inconsistency when adding, editing, or deleting data
C. Speeds up searches
D. A primary key made up of more than one field
E. Prohibits user from creating new forms or reports
Effect Size
A quantitative measure of the magnitude of a phenomenon or the strength of the relationship between variables.
Significance Level
The probability of rejecting the null hypothesis in a statistical test when it is actually true, typically set at 0.05 or 5%.
Degrees of Freedom
Represents the number of independent pieces of information available to estimate another piece of information or parameter in a dataset.
Test Statistic
A value calculated from sample data during a hypothesis test, used to decide whether to reject the null hypothesis.
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