1. Statistical Reference Guide
  2. Measurement systems analysis (MSA)

Trueness, Bias & Linearity (CLSI EP06) in ExcelTrueness is the closeness of agreement between the average of an infinite number of replicate measured quantity values and a reference quantity value.

Trueness is not a quantity and therefore cannot be expressed numerically. Rather it is expressed as bias.

  • Bias
    Bias is a measure of a systematic measurement error, the component of measurement error that remains constant in replicate measurements.
  • Linearity
    Nonlinear bias is a component of bias that cannot be represented by a linear relationship between the measured and true values.
  • Interferences
    Interference bias is a component of bias caused by nonspecificity attributable to the presence of a specific interfering substance.
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From the Statistical Reference Guide for Analyse-it 6.24.0: https://analyse-it.com/docs/user-guide/measurement-systems-analysis/trueness

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