If the Proportion of Persons Answering a Given Item Correctly

question 29

Multiple Choice

If the proportion of persons answering a given item correctly were to reach 95%, then the item would be assigned

• A) a .95 confidence level
• B) a .95 alpha error
• C) a .95 discrimination index
• D) a .95 difficulty index

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Definitions:

Normal Distribution

A statistical distribution that is symmetric around the mean, showing that data near the mean are more frequent in occurrence than data far from the mean.

Score

A quantitative expression of achievement, performance, or ability, often in tests and competitions.

Informed Consent

The process by which individuals are fully informed about the procedures, risks, and goals of a treatment or study they are participating in, allowing them to voluntarily decide whether to participate.

Research Participants

Individuals who take part in scientific research studies, also known as subjects, from whom data is collected through various means like experiments, surveys, or observations.