statistical+sample

См. также в других словарях:

• statistical sample — selection of items that represent the general opinion of a population …   English contemporary dictionary

• 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

• 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

• Statistical survey — Statistical surveys are used to collect quantitative information about items in a population. Surveys of human populations and institutions are common in political polling and government, health, social science and marketing research. A survey… …   Wikipedia

• Statistical literacy — is a term used to describe an individual s or group s ability to understand statistics. Statistical literacy is necessary for citizens to understand material presented in publications such as newspapers, television, the internet. Numeracy is a… …   Wikipedia

• Statistical noise — is the colloquialism for recognized amounts of variation in a sample. See errors and residuals in statistics. External links * * [http://www.wisegeek.com/what is statistical noise.htm What is Statistical Noise?] …   Wikipedia

• statistical control — Statistical techniques for excluding the influence of specified variables in an analysis. For example, if the data from a sample survey showed a strong association between unemployment and clinical depression, one might want to control for the… …   Dictionary of sociology

• Statistical hypothesis testing — This article is about frequentist hypothesis testing which is taught in introductory statistics. For Bayesian hypothesis testing, see Bayesian inference. A statistical hypothesis test is a method of making decisions using data, whether from a… …   Wikipedia

• Statistical inference — In statistics, statistical inference is the process of drawing conclusions from data that are subject to random variation, for example, observational errors or sampling variation.[1] More substantially, the terms statistical inference,… …   Wikipedia

• Statistical power — The power of a statistical test is the probability that the test will reject a false null hypothesis (that it will not make a Type II error). As power increases, the chances of a Type II error decrease. The probability of a Type II error is… …   Wikipedia

• Statistical significance — In statistics, a result is called statistically significant if it is unlikely to have occurred by chance. A statistically significant difference simply means there is statistical evidence that there is a difference; it does not mean the… …   Wikipedia