Selecting and Recruiting Subjects Since Andrew Only Had 3 Days

question 36

Multiple Choice

Selecting and Recruiting Subjects Since Andrew only had 3 days to collect experimental data, he obtained a convenience sample of students eating lunch in the cafeteria.Nonprobability sampling worried him because of risk to his experiment's

• A)effect size.
• B)external validity.
• C)internal validity.
• D)statistical power.

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Definitions:

Upper Control Limits

The threshold values in statistical quality control that indicate the maximum acceptable variation in a process.

Pareto Analysis

A decision-making technique used for selecting a limited number of tasks that produce significant overall effect, based on the principle that 80% of effects come from 20% of causes.

Vital Few

A principle often associated with the Pareto Principle, indicating that a small number of causes, inputs, or effort usually lead to a majority of the results, outputs, or rewards.

Cause-And-Effect

A relationship between events where one is the result of the other, often illustrated by a fishbone diagram in quality improvement contexts.