A Measuring Tool Is Considered to Be Valid When It

question 3

Multiple Choice

A measuring tool is considered to be valid when it

• A) is reliable.
• B) is easy to use.
• C) yields consistent results.
• D) measures what is supposed to evaluate.

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Definitions:

Discrete Random Variable

A variable that can take on a countable number of distinct values, often used to model scenarios where outcomes are distinct.

Discrete Random Variable

A variable that can take on a countable number of distinct and separate values, often used in probability and statistics.

Probability Distribution

A statistical function that describes all the possible values and likelihoods that a random variable can take within a given range.

Expected Value

The long-run average value of repetitions of the experiment it represents, computed as the weighted average of all possible values.