Explain the Difference Between Internal and External Validity and Identify

question 47

Essay

Explain the difference between internal and external validity and identify what types of studies have advantages for each one.

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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.