When we repeat a measurement on an individual or group of individuals and do not get the same score as the first time we did the measurement (assuming the characteristic being measured has not changed),a ____ is present.
A)systematic error
B)researcher error
C)random error
D)scaling error
E)marginal error

Question

Quizplus · Accepted Answer

When a measurement is repeated and the result is not the same, it is likely due to random error. Random error is caused by unanticipated or uncontrollable factors that can affect the measurement. Systematic error, on the other hand, occurs consistently in the same direction and is caused by a flaw or bias in the measurement process itself. Researcher error and scaling error are not commonly used terms in this context, and marginal error is not relevant to this situation.

When We Repeat a Measurement on an Individual or Group