Examlex
A foreign key is a data field in the records of one file that references a primary key in the records of another file.
Mean of Scores
Calculated as the sum of all scores or values in a data set divided by the number of scores, representing the average.
One-Tailed
Refers to a hypothesis test in statistics that specifies the direction of the difference or relationship expected between variables, either greater or less, but not both.
Null Hypothesis
A default hypothesis that there is no effect or no difference, and any observed differences in the data are due to chance.
Statistical Test
is a mathematical procedure applied to data in order to determine the significance of relationships or differences among variables.
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