Imagine you know the true length of a board to be 24 inches.Measuring the board 10 times with Instrument A,you find the measures vary from 19 to 28 inches.Using Instrument B,you find the measures vary from 23 to 25 inches.You can conclude that Instrument A has _____ than Instrument B.
A) a greater amount of true score
B) more reliability
C) more reactivity
D) more measurement error

Question

Quizplus · Accepted Answer

Instrument A has a greater range of measurement error, as the measures vary more widely from the true length of the board. In contrast, Instrument B has a smaller range of measurement error, as the measures are clustered closer together around the true length of the board. Therefore, Instrument B is likely to be more accurate and reliable than Instrument A.

Imagine You Know the True Length of a Board to Be