Dear researchers
Whats the exact difference between Reliability, agreement, reproducability, repeat-ability , Inter rater , and intra rater concepts in a computerized test?
Is agreement equal to reproducability ?
Is reliability equal to agreement?
whats the relation between intra rater and inter rater with such concepts?
sincerely yours.
Reliability is the probability of failure-free operation.
There are important differences
between the concepts of agreement and reliability. Agreement points to the question, whether diagnoses,
scores, or judgments are identical or similar or the
degree to which they differ. In this situation, the absolute
degree of measurement error is of interest. Consequently,
any variability between subjects or the distribution of the
rated trait in the population does not matter. For instance,
percent agreement for nominal data or limits of agreement
for interval and ratio data are excellent measures because
they provide this very kind of information in a simple manner.
On the other hand, there are the reliability coefficients.
Reliability is typically defined as the ratio of variability between
scores of the same subjects (e.g., by different raters
or at different times) to the total variability of all scores
in the sample. Therefore, reliability coefficients (e.g.,
kappa, intraclass correlation coefficient) provide information
about the ability of the scores to distinguish between
subjects. From this, it also follows that reliability coefficients must be low when there is little variability among
the scores or diagnoses obtained from the instrument under
investigation. This occurs when the range of obtained
scores is restricted or prevalence is very high or very low. (Source: https://doi.org/10.1016/j.jclinepi.2010.12.001).
Intra-rater reliability refers to the degree of agreement among multiple repetitions of a diagnostic test performed by a single rater.
In statistics, inter-rater reliability, inter-rater agreement, or concordance is the degree of agreement among raters.
http://rater-reliability.blogspot.in/
https://en.wikipedia.org/wiki/Inter-rater_reliability
- Badges
- Science topic
- Similar topics
- Mathematical Sciences
- Statistics
- Probability
- Probability Theory
- Reliability