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• 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 rate conversion — is the process of converting a (usually digital) signal from one sampling rate to another, while changing the information carried by the signal as little as possible. When applied to an image, this process is sometimes called image scaling.Sample …   Wikipedia

• sample preparation — ▪ chemistry Introduction  in analytical chemistry (chemistry), the processes in which a representative piece of material is extracted from a larger amount and readied for analysis. Sampling and sample preparation have a unique meaning and special …   Universalium

• 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

• sample — 1) A small quantity of a commodity, etc. , selected to represent the bulk of a quantity of goods. See sale by sample 2) A small quantity of a product, given to potential buyers to enable them to test its suitability for their purposes. 3) A group …   Big dictionary of business and management

• sample — 1) A small group of items selected from a larger group to represent the characteristics of the larger group. Samples are often used in auditing because it is not feasible to inspect all the available documentation; however, conclusions drawn from …   Accounting dictionary

• sample — 1. A specimen of a whole entity small enough to involve no threat or damage to the whole; an aliquot. 2. A selected subset of a population; a s. may be random or nonrandom (haphazard), representative or nonrepresentative. [M.E. ensample, fr. L.… …   Medical dictionary

• Random sample — A sample is a subject chosen from a population for investigation. A random sample is one chosen by a method involving an unpredictable component. Random sampling can also refer to taking a number of independent observations from the same… …   Wikipedia

• random sample — noun 1. a sample in which every element in the population has an equal chance of being selected • Topics: ↑statistics • Hypernyms: ↑sample distribution, ↑sample, ↑sampling 2. a sample grabbed at random • Topics: ↑ …   Useful english dictionary

• Simple Random Sample — A subset of a statistical population in which each member of the subset has an equal probability of being chosen. A simple random sample is meant to be an unbiased representation of a group. An example of a simple random sample would be a group… …   Investment dictionary

• Simple random sample — In statistics, a simple random sample is a subset of individuals (a sample) chosen from a larger set (a population). Each individual is chosen randomly and entirely by chance, such that each individual has the same probability of being chosen at… …   Wikipedia