Examlex
Achievement tests measure a student's aptitude for learning.
Dependent Variable
A variable whose value depends on that of another variable.
Correlation Coefficient
A numerical measure that describes the strength and direction of a relationship between two variables.
Independent Variable
The variable that is manipulated or changed in an experiment to see if it affects the outcome.
T-test
A statistical test used to compare the means of two groups and determine if they are statistically significantly different.
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