Examlex
Which research foundation has created a center for survey research?
Correlation Coefficient
A measure that determines the degree to which two variables' movements are associated.
True Score
The true score is a theoretical concept in psychometrics representing the actual measure of the trait or characteristic being assessed, without the distortion of measurement error.
Measurement Error
The difference between the true value and the measured value due to inaccuracies or flaws in the measurement process or instrument.
Measure
To ascertain the size, amount, or degree of something using a standard unit or instrument.
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