a process to ensure the reliability of test results

The mean is the “average” student response to an item. Up to 150 items can be scored on the Standard Answer Sheet. This is the question number taken from the student answer sheet, and the ScorePak® Key Sheet. The ScorePak® item analysis report provides the following item information: Item Number Item statistics are used to assess the performance of individual test items on the assumption that the overall quality of a test derives from the quality of its items. The second part shows statistics summarizing the performance of the test as a whole. The first part assesses the items which made up the exam. The quality of the test as a whole is assessed by estimating its “internal consistency.” The quality of individual items is assessed by comparing students’ item responses to their total test scores.įollowing is a description of the various statistics provided on a ScorePak® item analysis report. Separate item analyses can be requested for each raw score 1 created during a given ScorePak® run.Ī basic assumption made by ScorePak® is that the test under analysis is composed of items measuring a single subject area or underlying ability. In addition, item analysis is valuable for increasing instructors’ skills in test construction, and identifying specific areas of course content which need greater emphasis or clarity. Item analysis is especially valuable in improving items which will be used again in later tests, but it can also be used to eliminate ambiguous or misleading items in a single test administration. Item analysis is a process which examines student responses to individual test items (questions) in order to assess the quality of those items and of the test as a whole.

A process to ensure the reliability of test results