reliability internal consistency
https://scholarworks.iupui.edu/bitstream/handle/1805/344/gliem+&+gliem.pdf?sequence=1
hypothesis that the intraclass reliability coefficients The intraclass correlation is a reliability coefficient with a broad range of applications.
The correlation coefficient (r) between the two sets of values designates the degree of reliability. For perceptive field tests correlations more than or equal
Reliability means that the scores of an instrument are stable and explained with Kuder-Richardson (KR-20) and coefficient alpha (Cronbach 1984) values.
(AERA 1999; Cronbach 1951; Hulin
Dec 24 2017 discuss the validity and reliability of measurement instruments that ... Test-retest reliability: The reliability coefficient is obtained by ...
Items 1 - 6 reliability coefficient and the reliability index are derived from the model. 2. According to classical true score theory two measures/tests are ...
To calculate: Administer one test once and then calculate the reliability index by coefficient alpha Kuder-Richardson formula 20 (KR-20) or the Spearman-
For a classroom exam it is desirable to have a reliability coefficient of .70 or higher. High reliability coefficients are required for standardized tests