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Appendix A. Glossary
13
A.2 Concepts
A.2.1
Accuracy, Precision, and Resolution
Three terms often confused are accuracy, precision, and resolution.
Accuracy
is
a measure of the correctness of a single measurement, or the group of
measurements in the aggregate.
Precision
is a measure of the repeatability of a
group of measurements.
Resolution
is a measure of the fineness of a
measurement. Together, the three define how well a data acquisition system
performs. To understand how the three relate to each other, consider "target
practice" as an analogy.
FIGURE. Accuracy, Precision, and Resolution
(p. 13)
shows four targets. The bull's eye on each target represents the absolute correct
measurement. Each shot represents an attempt to make the measurement. The
diameter of the projectile represents resolution.
Figure 53: Accuracy, Precision, and Resolution
The objective of a data acquisition system should be high accuracy, high
precision, and to produce data with resolution as high as appropriate for a given
application.
Содержание CR200
Страница 32: ...Section 2 Quickstart Tutorial 22 ...
Страница 45: ...Section 3 Overview 35 3 3 Specifications ...
Страница 46: ...Section 3 Overview 36 ...
Страница 58: ...Section 4 Sensor Support 48 ...
Страница 62: ...Section 5 Measurement and Control Peripherals 52 ...
Страница 78: ...Section 8 CR200 X Configuration 68 ...
Страница 102: ...Section 9 Programming 92 ...
Страница 138: ...Section 11 Programming Resource Library 128 ...
Страница 156: ...Section 16 Support Software 146 ...
Страница 160: ...Section 17 Care and Maintenance 150 ...
Страница 166: ...Section 18 Troubleshooting 156 18 3 3 Diagnosis and Fix Procedures 18 3 3 1 Battery Voltage Test ...
Страница 167: ...Section 18 Troubleshooting 157 18 3 3 2 Charging Circuit Test Solar Panel ...
Страница 168: ...Section 18 Troubleshooting 158 18 3 3 3 Charging Circuit Test Transformer ...
Страница 169: ...Section 18 Troubleshooting 159 18 3 3 4 Adjusting Charging Circuit Voltage ...
Страница 170: ...Section 18 Troubleshooting 160 ...
Страница 184: ...Appendix A Glossary 14 ...
Страница 190: ...Appendix B Status Table and Settings 20 ...
Страница 192: ...Appendix C Serial Port Pin Outs 22 ...
Страница 211: ......