What do we call a single source of error that always increases or decreases the true score by the same amount?
A) the true score
B) the average score
C) random error
D) systematic error

Question

Quizplus · Accepted Answer

A single source of error that always increases or decreases the true score by the same amount is called systematic error. Option A (the true score) is not a source of error, but rather the ideal score we aim for. Option B (the average score) is not necessarily affected by a single source of error, but can be impacted by both random and systematic errors. Option C (random error) is not the correct answer as it refers to errors that occur due to chance and are not consistent in their impact on scores. Therefore, the correct answer is D (systematic error).

What Do We Call a Single Source of Error That