1. This guarantees that all vital management and information functions are performed. 2. The item information function for the two parameter model is 3. The other CSB template, called Limited geographic scope, fills another important reader information function . 4. In general, item information functions tend to look bell-shaped. 5. Because of local independence, item information functions are additive. 6. Highly discriminating items have tall, narrow information functions ; they contribute greatly but over a narrow range. 7. This helped to generate regular exchange-rate quotations ( an important information function ) with many foreign locations. 8. Thus, the test information function is simply the sum of the information functions of the items on the exam. 9. Thus, the test information function is simply the sum of the information functions of the items on the exam. 10. Using this property with a large item bank, test information functions can be shaped to control measurement error very precisely.
