Example image of eyePlorer eyePlorer map for 'Level of measurement': Stanley Smith Stevens Science (journal) Measurement Igneous rock Metamorphic rock Nominal category Sedimentary rock Element (mathematics) Equivalence Analysis of categorical data Mode (statistics) Ranking Horse racing Mohs scale of mineral hardness Psychometrics Median Celsius Affine space Units of measurement Ratio Arithmetic mean Interquartile range Range (statistics) Standard deviation Coefficient of variation Studentized range Central moment Moment (mathematics) Standardized moment Absolute zero Kelvin Geometric mean Harmonic mean PSPP Law of comparative judgment Louis Leon Thurstone Analytic Hierarchy Process Georg Rasch Rasch model Behavioural sciences British Science Association Otto Hölder Theory of conjoint measurement R. Duncan Luce Contingency table Data point Degree (temperature) Deviation (statistics) Discretization of continuous features Fleiss' kappa