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cumulative population size

См. также в других словарях:

  • Sample size determination — is the act of choosing the number of observations to include in a statistical sample. The sample size is an important feature of any empirical study in which the goal is to make inferences about a population from a sample. In practice, the sample …   Wikipedia

  • Illegal immigrant population of the United States — The actual size and the origin of the illegal immigrant population in the United States is uncertain and hard to ascertain because of difficulty in accurately counting individuals in this population. National surveys, administrative data and… …   Wikipedia

  • Sample size — The sample size of a statistical sample is the number of observations that constitute it. It is typically denoted n , a positive integer (natural number).Typically, all else being equal, a larger sample size leads to increased precision in… …   Wikipedia

  • Class-size reduction — As an education reform, the broad goal of class size reduction (CSR) is to increase the number of individualized student teacher interactions intended to improve student learning. A reform long holding theoretical attraction to many… …   Wikipedia

  • DEMOGRAPHY — This entry is arranged according to the following outline: introduction size and geographical distribution of world jewry major geographical shifts of world jewry up to world war i 1914 TO 1939 the shoah 1948 TO 1970 1970 TO 2005 dispersion and… …   Encyclopedia of Judaism

  • evolution — evolutional, adj. evolutionally, adv. /ev euh looh sheuhn/ or, esp. Brit., /ee veuh /, n. 1. any process of formation or growth; development: the evolution of a language; the evolution of the airplane. 2. a product of such development; something… …   Universalium

  • Life Sciences — ▪ 2009 Introduction Zoology       In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… …   Universalium

  • Student's t-distribution — Probability distribution name =Student s t type =density pdf cdf parameters = u > 0 degrees of freedom (real) support =x in ( infty; +infty)! pdf =frac{Gamma(frac{ u+1}{2})} {sqrt{ upi},Gamma(frac{ u}{2})} left(1+frac{x^2}{ u} ight)^{ (frac{… …   Wikipedia

  • Uniform distribution (discrete) — discrete uniform Probability mass function n = 5 where n = b − a + 1 Cumulative distribution function …   Wikipedia

  • Incidence (epidemiology) — Incidence is a measure of the risk of developing some new condition within a specified period of time. Although sometimes loosely expressed simply as the number of new cases during some time period, it is better expressed as a proportion or a… …   Wikipedia

  • UNITED STATES OF AMERICA — UNITED STATES OF AMERICA, country in N. America. This article is arranged according to the following outline: introduction Colonial Era, 1654–1776 Early National Period, 1776–1820 German Jewish Period, 1820–1880 East European Jewish Period,… …   Encyclopedia of Judaism

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