Topmusicanswers
- How is discrimination value calculated?
- What are discrimination values?
- What does discrimination index tell you?
- What is discrimination power of a test?
How is discrimination value calculated?
Determine the Discrimination Index by subtracting the number of students in the lower group who got the item correct from the number of students in the upper group who got the item correct. Then, divide by the number of students in each group (in this case, there are five in each group).
What are discrimination values?
The discrimination value is the difference in the occurrence matrix's vector-space density versus the same matrix's vector-space without the index term's density. Let: be the occurrence matrix be the occurrence matrix without the index term and be density of .
What does discrimination index tell you?
The discrimination index (DI) measures how discriminating items in an exam are – i.e. how well an item can differentiate between good candidates and less able ones. ... The discrimination index value for an item ranges from -1 to +1 with positive numbers over 0.2 reliably implying that an item is positively discriminating.
What is discrimination power of a test?
1. a measure of the ability of a test to distinguish between two or more groups being assessed.
