{"code":"C53322","name":"Standard Deviation","terminology":"ncit","version":"26.09d","conceptStatus":"DEFAULT","leaf":false,"active":true,"synonyms":[{"name":"standard deviation","termType":"PT","type":"FULL_SYN","typeCode":"P90","source":"CDISC-GLOSS"},{"name":"RMSD","termType":"SY","type":"FULL_SYN","typeCode":"P90","source":"CDISC"},{"name":"Root Mean Square Deviation","termType":"SY","type":"FULL_SYN","typeCode":"P90","source":"CDISC"},{"name":"SD","termType":"SY","type":"FULL_SYN","typeCode":"P90","source":"CDISC"},{"name":"STANDARD DEVIATION","termType":"PT","type":"FULL_SYN","typeCode":"P90","source":"CDISC"},{"name":"Std Dev","termType":"SY","type":"FULL_SYN","typeCode":"P90","source":"CDISC"},{"name":"SD","termType":"AB","type":"FULL_SYN","typeCode":"P90","source":"NCI"},{"name":"Standard Deviation","termType":"PT","type":"FULL_SYN","typeCode":"P90","source":"NCI"},{"name":"Standard Deviation","type":"Preferred_Name","typeCode":"P108"}],"definitions":[{"definition":"A measure of the range of values in a set of numbers. Standard deviation is a statistic used as a measure of the dispersion or variation in a distribution, equal to the square root of the arithmetic mean of the squares of the deviations from the arithmetic mean.","code":"P97","type":"DEFINITION","source":"NCI","qualifiers":[{"code":"P381","type":"attribution","value":"Free On-Line Dictionary of Computing"}]},{"definition":"Indicator of the relative variability of a variable around its mean; the square root of the variance.","code":"P325","type":"ALT_DEFINITION","source":"CDISC-GLOSS"},{"definition":"The ratio of the standard deviation to the mean, expressed as a percentage or fraction.","code":"P325","type":"ALT_DEFINITION","source":"CDISC"}],"properties":[{"code":"P322","type":"Contributing_Source","value":"CDISC"},{"code":"P322","type":"Contributing_Source","value":"CDISC-GLOSS"},{"code":"P366","type":"Legacy Concept Name","value":"Standard_Deviation"},{"code":"P106","type":"Semantic_Type","value":"Quantitative Concept"},{"code":"P207","type":"UMLS_CUI","value":"C0871420"}]}