15. Accuracy in Measurement
Environmental quality monitoring and analysis focuses on achieving precise measurements by comparing measured values to established standards. Understanding accuracy, precision, and the significance of calibration is crucial to ensuring reliable analytical results, especially in complex measurements like concentrations. Standard organizations globally work towards defining and maintaining these standards for various measurements.
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What we have learnt
- Accuracy represents the closeness of a measured value to the true value.
- Calibration involves establishing a relationship between instrument response and actual measurement units.
- Standards are critical in confirming the reliability and accuracy of measurements across different instruments and contexts.
Key Concepts
- -- Accuracy
- The degree to which a measured value represents the true value of the quantity being measured.
- -- Calibration
- The process of configuring an instrument to provide a result for a sample within an acceptable range, typically through the use of standard measurements.
- -- Standard
- An established value that serves as a reference point for measuring and verifying the accuracy of instruments.
- -- Precision
- The consistency of repeated measurements, which reflects the reliability of a measurement process.
- -- Detection Limit
- The lowest concentration of an analyte that can be reliably detected by an analytical procedure.
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