You Are Looking at the Information an Item Analysis Provides

question 66

Multiple Choice

You are looking at the information an item analysis provides about a quiz you gave this morning.Most of the test items have D values of between .20 and .50.However, question #12 has a D value of -.60.You should conclude that the item:

• A)Is measuring rote memorization rather than meaningful learning
• B)Was more difficult for students than the other items were
• C)Was easier for students than the other items were
• D)Was poorly written or incorrectly scored

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Definitions:

Sample Size

The number of observations or elements drawn from a larger population for the purpose of statistical analysis.

Null Hypothesis

A hypothesis that there is no effect or no difference, and it serves as the default assumption in statistical hypothesis testing.

Correlation Coefficient

A statistical index ranging from -1 to 1 that measures the degree of association between two variables.

Greek Symbols

Characters used in mathematics, science, and engineering that originate from the Greek alphabet, often representing constants, variables, and parameters.