An Item Analysis Yields the Following Results for a Multiple-Choice

question 17

Multiple Choice

An item analysis yields the following results for a multiple-choice item (alternative A is the correct answer) : Number of students in the upper and lower scoring groups on the total test choosing each alternative.
Alternative A* B C D Omit Total
Upper Group 3 1 5 1 0 10
Lower Group 6 2 0 1 1 10
Which one of the following statements is NOT justified by these results?

• A)The item should be reviewed for possible miskeying.
• B)The item has negative discrimination.
• C)The item has a difficulty of 45%.
• D)The item is invalid.

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Definitions:

Supply Curve

A graphical representation that shows the relationship between the price of a good or service and the quantity of that good or service that suppliers are willing and able to provide.

Price Elasticity

The determination of how significantly a good's demanded quantity is influenced by its price movements.

Midpoint Method

A technique used in economics to calculate the percentage change between two numbers, offering a more accurate depiction of proportionate change.

Supply

The total amount of a product or service available for purchase at any given price level.