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Alpha is also a function of the number of items, so shorter scales will often have lower reliability estimates yet still be preferable in many situations because they are lower burden. An alternative way of thinking about internal consistency is that it is the extent to which all of the items of a test measure the same latent variable. The ...
In accounting, the convention in consistency is a principle that the same accounting principles should be used for preparing financial statements over a number of time periods. [ 1 ] [ 2 ] This enables the management to draw important conclusions regarding the working of the concern over a longer period. [ 3 ]
These constraints may allow for variations to the accounting standards an accountant is trying to follow. Types of constraints include objectivity, costs and benefits, materiality, consistency, industry practices, timeliness, and conservatism, though there may be other types of constraints not listed
The term "internal consistency" is commonly used in the reliability literature, but its meaning is not clearly defined. The term is sometimes used to refer to a certain kind of reliability (e.g., internal consistency reliability), but it is unclear exactly which reliability coefficients are included here, in addition to ρ T {\\displaystyle ...
Internal consistency: assesses the consistency of results across items within a test. The most common internal consistency measure is Cronbach's alpha , which is usually interpreted as the mean of all possible split-half coefficients. [ 9 ]
Reliability is established with a variety of statistical techniques, classically through an internal consistency test like Cronbach's alpha to ensure sets of related questions have related responses, and then comparison of those related question between reference and target population. [citation needed]
Analysis of homogeneity (internal consistency), which gives an indication of the reliability of a measurement instrument. [117] During this analysis, one inspects the variances of the items and the scales, the Cronbach's α of the scales, and the change in the Cronbach's alpha when an item would be deleted from a scale [118]
In the case when scores are not tau-equivalent (for example when there is not homogeneous but rather examination items of increasing difficulty) then the KR-20 is an indication of the lower bound of internal consistency (reliability). The formula for KR-20 for a test with K test items numbered i = 1 to K is