Accurate & Precise Graph 1A straight line passing through the origin represents the true value for a line y = xEvery measured value is plotted to exactly match the line of best fit (precision) which exactly matches the line of true value (accuracy) Target 5The...
Accurate But Not Precise Graph 2A straight line passing through the origin represents the true value for a line y = xEvery measured value is plotted so that it lies away from the line representing the true value (imprecision) but so that the line of best fit matches...
Linearity Describes a measure of how well the measured value represents the true value over the full range of the system - can be considered a graphical display of accuracyCan be expressed as the maximum difference between the displayed and actual value, or this...
Drift Offset Drift Gain (Gradient) Drift A measure of the degree to which the measured value changes over timeIt is usually caused by temperature changes or unstable components in the system.Can take two forms - offset and gain A fixed deviation from the true value...
Hystereis The phenomenon of the difference between the measured value and the true value depending upon whether the true value is increasing or decreasingThe graph of true value versus displayed value will have two lines: one for the true value increasing and one for...
