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The source reliability is rated between A (history of complete reliability) to E (history of invalid information), with F for source without sufficient history to establish reliability level. The information content is rated between 1 (confirmed) to 5 (improbable), with 6 for information whose reliability can not be evaluated.
TAP (Test Analysis Program) is a free Windows program written in Delphi Pascal that performs test and item analyses based on classical test theory. TAP provides reports on examinee total scores, item statistics (e.g., item difficulty, item discrimination, point-biserial), options analyses, and other useful information.
Analysis of responses is recorded by the test administrator using a tabulation and scoring sheet and, if required, a separate location chart. [26] The general goal of the test is to provide data about cognition and personality variables such as motivations, response tendencies, cognitive operations, affectivity, and personal/interpersonal ...
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Also, reliability is a property of the scores of a measure rather than the measure itself and are thus said to be sample dependent. Reliability estimates from one sample might differ from those of a second sample (beyond what might be expected due to sampling variations) if the second sample is drawn from a different population because the true ...
Let's look at DirecTV (NAS: DTV) and three of its industry peers, to see how efficiently they use cash. Here are the ROIC figures for each company over a few periods. Here are the ROIC figures for ...
Google recently held informal talks with NFL executives about buying the rights to the NFL Sunday Ticket, according to AllThingsD. Satellite TV provider DIRECTV currently holds the rights, but its ...
The item-reliability index (IRI) is defined as the product of the point-biserial item-total correlation and the item standard deviation. In classical test theory, the IRI indexes the degree to which an item contributes true score variance to the exam observed score variance. In practice, a negative IRI indicates the relative degree which an ...