X_O = X_T + X_S + X_R In the true score model shown above, X_T represents ________. A)random error B)the observed score or measurement C)the true score of the characteristic D)systematic error

Question

Quizplus · Accepted Answer

In the true score model, X_T represents the true score of the characteristic, which is the underlying ability or trait being measured, free from the effects of measurement error or other sources of variance. X_S represents random error, X_R represents systematic error, and X_O represents the observed score or measurement.

XO = XT + XS + XR

X_O = X_T + X_S + X_R