sample calculations

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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 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

• Mann–Whitney U — In statistics, the Mann–Whitney U test (also called the Mann–Whitney–Wilcoxon (MWW) or Wilcoxon rank sum test) is a non parametric statistical hypothesis test for assessing whether one of two samples of independent observations tends to have… …   Wikipedia

• Burkhard Heim — Infobox Scientist name = Burkhard Heim box width = image width = 200px caption = Burkhard Heim (from Heim Theory by Illobrand Von Ludwiger) birth date = February 09, 1925 birth place = Potsdam death date = January 14, 2001 death place = Northeim… …   Wikipedia

• Back-of-the-envelope calculation — The phrase back of the envelope calculations refers to rough calculations that, while not rigorous, test or support a point. They are far more than a guess but far less than a proof. The phrase is generally used in mathematics, physics and… …   Wikipedia

• Direct integration of a beam — Direct integration is a structural analysis method for measuring internal shear, internal moment, rotation, and deflection of a beam. Positive directions for forces acting on an element. For a beam with an applied weight w(x), taking downward to… …   Wikipedia

• Transmission coefficient — right|frame|An electromagnetic (or any other) wave experiences partial transmittance and partial reflectance when the medium through which it travels suddenly changes.The transmission coefficient is used in physics and electrical engineering when …   Wikipedia

• Net capital rule — The uniform net capital rule is a rule created by the U.S. Securities and Exchange Commission ( SEC ) in 1975 to regulate directly the ability of broker dealers to meet their financial obligations to customers and other creditors.[1] Broker… …   Wikipedia

• Denavit–Hartenberg parameters — A commonly used convention for selecting frames of reference in robotics applications is the Denavit and Hartenberg (D–H) convention which was introduced by Jaques Denavit and Richard S. Hartenberg. In this convention, each homogeneous… …   Wikipedia

• Age of the Earth — This article is about scientific estimates of the age of the Earth. For religious and other non scientific estimates, see Dating Creation. Earth as seen from Apollo 17 The age of the Earth is 4.54 billion years (4.54 × 109 years ± 1%) …   Wikipedia