Reliability of test:
Reliability is
synonymous with the consistency of a test, survey, observation, or other
measuring device. Based on the
inconsistency of this scale, any research relying on it would certainly be
unreliable.
A reliability
coefficient is often the statistic of choice in determining the reliability of
a test. This coefficient merely
represents a correlation, which measures the intensity and direction of a
relationship between two or more variables.