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Until the development of tau-equivalent reliability, split-half reliability using the Spearman-Brown formula was the only way to obtain inter-item reliability. [4] [5] After splitting the whole item into arbitrary halves, the correlation between the split-halves can be converted into reliability by applying the Spearman-Brown formula.
It may also be difficult if not impossible to guarantee that two alternate forms of a test are parallel measures; 3. Split-half method: This method treats the two halves of a measure as alternate forms. It provides a simple solution to the problem that the parallel-forms method faces: the difficulty in developing alternate forms. [7] It involves:
Split-half reliability (Spearman- Brown Prophecy) and Cronbach Alpha are popular estimates of this reliability. [5] (D) Parallel Form Reliability: It is an estimate of consistency between two different instruments of measurement. The inter-correlation between two parallel forms of a test or scale is used as an estimate of parallel form reliability.
The Wide Range Achievement Test, currently in its fifth edition (WRAT5), is an achievement test which measures an individual's ability to read words, comprehend sentences, spell, and compute solutions to math problems. [1] The test is appropriate for individuals aged 5 years through adult.
Split-half reliability for the scale was .91 (high). The correlation between Ethnocentrism and Anti-Semitism scales was .80 (relatively high). This result is "evidence that antagonism to the culturally unlike is a generalized sentiment" [20]: 50
Internal consistency (Cronbach's alpha, split half, etc.) Good Cronbach's alpha reported at .80 [2] Inter-rater reliability: No published studies formally checking inter-rater reliability Test-retest reliability (stability) Good Kappa = .60 when administration was done within 2 weeks of first test [28] [2] Repeatability
Giannis Antetokounmpo scored 37 points, Damian Lillard had nine of his 28 in the final minute and the Milwaukee Bucks returned to the NBA Cup semifinals in Las Vegas by beating the Orlando Magic ...
Generalizability theory, or G theory, is a statistical framework for conceptualizing, investigating, and designing reliable observations.It is used to determine the reliability (i.e., reproducibility) of measurements under specific conditions.