When the Data Being Studied Are Gathered from a Private

question 9

Multiple Choice

When the data being studied are gathered from a private source,this is referred to as a(n) _______________.

• A)Existing data source
• B)Observational data source
• C)Experimental data source
• D)Cross-sectional data source

Understand the principles of probability distributions.

Apply probability functions to calculate expected values and variances.

Recognize the characteristics of different probability distributions (e.g., binomial, Poisson, hypergeometric).

Calculate probabilities in binomial experiments.

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Definitions:

Criterion-related Validity

The extent to which a measure is related to an outcome, where the validity is determined by comparing the measure against a known criterion or benchmark.

Construct Validity

The extent to which a test or instrument accurately measures the theoretical construct it is intended to assess.

Reliability

The reliability and steadiness of outcomes produced by a measurement tool across multiple instances.

Aggregation

The process of combining multiple pieces or data points together to form a whole or summary measure.