Describe the difference between trait and method errors

Reference no: EM133697185

Assignment:

1. Describe the difference between trait and method errors.

2. For an item to have a discrimination index of +1.00, the item needs to have a difficulty of 50 percent. Why?

References:

Salkind, N. J. & Frey, B. B. (2022). Tests & measurement for people who (think they) hate tests & measurement (4th ed.). Sage Publications, Inc.

Reference no: EM133697185

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