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 actuary a person who calculates insurance rates, risks, and dividends on the basis of statistical probabilities. appendix a section with additional material, often bibliographical or statistical, attached at the end of a book, article, or other text. [1/3 definitions] biometrics (used with a sing. verb) the mathematical and statistical analysis of biological data. box score a statistical summary in table form of each player's performance in a game, esp. baseball or basketball. Bureau of Labor Statistics a research agency of the U.S. Department of Labor that collects and compiles statistical information, providing such measures as Consumer Price Index, inflation rate, and unemployment rate. census an official count and statistical survey of a population, usu. conducted at periodic intervals. chi-square a statistical method that determines to what degree the differences between expected data and data actually derived can be ascribed to chance, rather than to some general cause or principle. demographic of or relating to the study of human populations, involving statistical analysis of size, distribution, density, migration, fertility, and the like. [1/3 definitions] demographics the characteristics of human populations, as shown by statistical analysis of their size, distribution, migration, density, or the like. demography the study of human populations, involving statistical analysis of size, distribution, density, migration, fertility, and the like. econometrics (used with a sing. verb) the application of mathematical and statistical methods to research in economics. frequency distribution a table of statistical data in which the observed values of a variable are grouped into classes, and the frequencies for each class are given. Gaussian of or pertaining to a function named after the mathematician Carl Friedrich Gauss that represents statistical data as a symmetrical bell-shaped curve. [1/4 definitions] Gaussian distribution function a function named after the mathematician Carl Friedrich Gauss that represents statistical data as a symmetrical bell-shaped curve; normal distribution function. -ile a division of (such) a size in a statistical range. [1/2 definitions] indicator one of the various statistical measures that show the relative stability of an economic system. [1/3 definitions] mean deviation a measure of variability, esp. in a statistical distribution, that is equal to the average of the absolute values of a set of deviations from the arithmetic mean or some other specified value. median the middle value in a series of numbers, or in a statistical distribution. [1/6 definitions] nonstatistical combined form of statistical. normal distribution function a function that represents statistical data as a symmetrical bell-shaped curve; Gaussian distribution function. skew to distort, as from a normal statistical curve or some other expected pattern. [1/6 definitions]