Why Do We Examine Samples Rather Than Populations

question 14

Multiple Choice

Why do we examine samples rather than populations?

• A) because populations cannot generally be measured
• B) because populations provide only qualitative data
• C) because samples are more accurate
• D) because samples include all subjects of interest

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Definitions:

Standard Deviation

A measure of the amount of variation or dispersion in a set of values.

MTBF

Mean Time Between Failures, a reliability metric that measures the average time between system failures in a process or product.

System Reliability

The probability that a system will perform its intended function without failure under stated conditions for a specified period of time.

Redundant Check

A process or mechanism that is repeated or additional, used to verify accuracy or reliability to ensure errors are minimized.