Observational error
DIFFERENCE BETWEEN A MEASURED QUANTITY VALUE AND A REFERENCE QUANTITY VALUE
ObservationalError; Measurement error; Experimental error; Systematic bias; Random error; Systematic error; Systemic error; Alleged systemic bias; Random errors; Systematic errors; Measurement errors; Observational Error; Systematic effect; Chance error; Accidental error; Constant error; Stochastic error; Observation error; Systematic and random error; Systematic and random errors; Random and systematic errors; Measurement Error
Observational error (or measurement error) is the difference between a measured value of a quantity and its true value.Dodge, Y.