𝔖 Bobbio Scriptorium
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How to predetermine the difficulty of items of examinations and standardized tests

✍ Scribed by Børge Prien

Book ID
118403843
Publisher
Elsevier Science
Year
1989
Tongue
English
Weight
392 KB
Volume
15
Category
Article
ISSN
0191-491X

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The relation of item difficulty and inte
The relation of item difficulty and inter-item correlation to test variance and reliability
✍ Harold Gulliksen 📂 Article 📅 1945 🏛 Springer 🌐 English ⚖ 676 KB

Under assumptions that will hold for the usual test situation, it is Laroved that test reliability and variance increase (a) as the average inter-Rein correlation increases, and (b) as the variance of the item difficulty distribution decreases. As the average item variance increases, the test varian