Item Discriminating Power Should Typically Not Be Interpreted as Item

question 12

Multiple Choice

Item discriminating power should typically not be interpreted as item validity because

• A)item analysis usually is based on a partial sample..
• B)item analysis usually uses an internal criterion.
• C)item validity is also based on item difficulty.
• D)defects in test items lower validity.

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Definitions:

Marginal Revenue

The increased earnings obtained from the sale of one extra unit of a product or service.

Total Cost

The total of all costs associated with the creation of products or services, encompassing both fixed and variable expenses.

Marginal Cost

The financial outlay for generating an additional unit of a good or service.

Profit Maximizing Price

The price at which a company can sell its product to maximize its profit, balancing between too high to deter consumers and too low to cover costs.