What is an acceptable reliability coefficient?
Between 0.9 and 0.8: good reliability. Between 0.8 and 0.7: acceptable reliability. Between 0.7 and 0.6: questionable reliability. Between 0.6 and 0.5: poor reliability.
What is the acceptable reliability coefficient cutoff number?
A general accepted rule is that α of 0.6-0.7 indicates an acceptable level of reliability, and 0.8 or greater a very good level. However, values higher than 0.95 are not necessarily good, since they might be an indication of redundance.
How do you interpret the reliability coefficient?
The reliability of a test is indicated by the reliability coefficient. It is denoted by the letter “r,” and is expressed as a number ranging between 0 and 1.00, with r = 0 indicating no reliability, and r = 1.00 indicating perfect reliability.
What is a good Cronbach score?
The general rule of thumb is that a Cronbach’s alpha of . 70 and above is good, . 80 and above is better, and . 90 and above is best.
Can a reliability coefficient be too high?
A general accepted rule is that Cronbach Alpha of 0.6-0.7 indicates an acceptable level of reliability, and 0.8 or greater a very good level. However, values higher than 0.95 are not necessarily good, since they might be an indication of redundancy [of questions] (Hulin, Netemeyer, and Cudeck, 2001) .
What is coefficient stability?
Abstract. The stability coefficient is described as the extent to which a test varies as the result of factors associated with the particular time and occasion on which the test was administered.
What is the purpose of reliability coefficient?
The Reliability Coefficient is a way of confirming how accurate a test or measure is by giving it to the same subject more than once and determining if there’s a correlation which is the strength of the relationship and similarity between the two scores.
Is Cronbach Alpha 0.4 reliable?
Cronbach’s alpha is commonly used as an estimate of the reliability of a psychometric test for a sample of examinees. It is most fall within the range of 0.75 to 0.83 with at least one claiming a Cronbach’s alpha above 0.90.
What is a good alpha coefficient?