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This Concept Map, created with IHMC CmapTools, has information related to: Scales of Measurement, orders things; magnitude between scores is even (even intervals); no 0 value examples GRE; IQ; centigrade; calendar yrs;, NOMINAL definition labels observations so they fit into a category, NOMINAL characteristics unique categories, RATIO characteristics unique categories + ordering + equal size intervals (magnitude) + 0 value, orders things; magnitude between scores is even (even intervals); unique categories & has 0 value examples time; weight; # of responses; size, INTERVAL characteristics unique categories + ordering + equal size intervals (magnitude), no math because means "to order;" categories can be ordered but intervals may not be even, RATIO definition orders things; magnitude between scores is even (even intervals); unique categories & has 0 value, labels observations so they fit into a category examples category: hair color - brown, blond, red category: sex - male, female, any ranking order; percentiles; 1st, 2nd & 3rd place; social class categories type of operations no math, ORDINAL definition means "to order;" categories can be ordered but intervals may not be even, means "to order;" categories can be ordered but intervals may not be even examples any ranking order; percentiles; 1st, 2nd & 3rd place; social class categories, INTERVAL definition orders things; magnitude between scores is even (even intervals); no 0 value, time; weight; # of responses; size type of operations any math, category: hair color - brown, blond, red category: sex - male, female type of operations no math, ORDINAL characteristics unique categories + ordering