Before revision: This Wikipedia page Validity ( the overarching concern) · Accuracy · Precision ISO 5725 Accuracy · Trueness (avoidance of systematic error; previously, avoidance of bias) · Precision (avoidance of random error) Statistics Accuracy · Bias · Variability Psychometrics Measurement URL · Validity · Reliability.
After revision: avoidance of observational error,This Wikipedia page Validity ( the overarching concern) · Accuracy · Precision ISO 5725 Accuracy · Trueness (avoidance of systematic error; previously, avoidance of bias) · Precision (avoidance of random error) Statistics Accuracy · Bias · Variability Psychometrics Measurement URL · Validity · Reliability.