For a measure to be reliable, it must be consistently interpreted and applied across different contexts and by different people.
Operational Definition: An operational definition specifies the exact procedures or criteria used to measure something, ensuring consistency and repeatability.
Consistency: With a clear operational definition, different people can use the measure in the same way, which is crucial for reliability.
Clarity: This definition eliminates ambiguity and ensures that everyone understands what is being measured and how.
Example: If measuring "response time," the operational definition might specify that it is the time between a user submitting a request and the system's initial response.
[Reference: "Measurement and Data Analysis for Engineering and Science" by Patrick F. Dunn., , ]
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