…An interval scale is a scale in which the difference in values is meaningful (for example, temperature expressed in degrees Celsius), and a ratio scale is an interval scale with an absolute origin (for example, temperature expressed in degrees Kelvin). There are other scales, such as the ordinal scale (for example, the ranking of heights), in which the size is meaningless but the relationship between values is meaningful, and the nominal scale (for example, postal code), in which the size or relationship between values is meaningless even if they are expressed numerically, such as gender or occupation. When factors that characterize an object are given not as quantitative variables but as qualitative data with an ordinal or nominal scale, there are methods that allow for quantitative evaluation and classification, such as quantification type III and type IV of quantification theory, small scale analysis (SSA), and multidimensional scaling. … *Some terminology explanations that mention "nominal scale" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…間隔尺度とは数値の差が意味をもつ尺度(たとえば℃で表した温度)をいい,比率尺度とは絶対原点をもつ間隔尺度(たとえばKで表した温度)をいう。尺度にはこのほかにも,大きさには意味がないが大小関係には意味がある順序尺度ordinal scale(たとえば身長の順位)や,性別,職業のように,数値で表したとしても,その大きさや大小関係には意味がない名義尺度nominal scale(たとえば郵便番号)がある。対象を特徴づける要因が量的な変量としてではなく,順序尺度や名義尺度をもつ質的なデータとして与えられている場合に,数量的評価を与え分類を可能にする手法として,数量化理論の数量化III類,IV類,最小次元解析(SSA:small scale analysis),多次元尺度構成法などがある。… ※「nominal scale」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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