A group of researchers developing an instrument performed a test-retest on the instrument with an interval of 5 days. This testing resulted in a correlation coefficient of 0.38. The nurse researcher interprets this as being indicative of what?
A) Instrument is stable; high reliability
B) Instrument is stable; low reliability
C) Instrument is unstable; high reliability
D) Instrument is unstable; low reliability

Question

Quizplus · Accepted Answer

The correlation coefficient of 0.38 is relatively low, indicating that the instrument is not producing consistent results over time (i.e., it is unstable). This suggests low reliability.

A Group of Researchers Developing an Instrument Performed a Test-Retest