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Possible solutions for the problem of teacher competency include
Convergent Validity
The construct validity of a measure is assessed by examining the extent to which scores on the measure are related to scores on other measures of the same construct or similar constructs.
Correlation Coefficient
A statistical measure that calculates the strength and direction of the relationship between two variables.
True Score
An individual’s actual score on a variable being measured, as opposed to the score the individual obtained on the measure itself.
Measurement Error
The degree to which a measurement deviates from the true score value.
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