proportional nomogram

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• Nomogram — Smith chart which shows how the complex impedance of a transmission line varies along its length This article is about the graphical devices called nomograms. Not to be confused with nonograms, a kind of Japanese puzzle, or monograms, small… …   Wikipedia

• Logarithmic scale — A logarithmic scale is a scale of measurement that uses the logarithm of a physical quantity instead of the quantity itself. Presentation of data on a logarithmic scale can be helpful when the data covers a large range of values ndash; the… …   Wikipedia

• Slide rule — For other uses, see Slide rule (disambiguation). A typical ten inch student slide rule (Pickett N902 T simplex trig). The slide rule, also known colloquially as a slipstick,[1] is a mechanical analog computer. The slide rule is used primarily for …   Wikipedia

• Chart — For other uses, see Chart (disambiguation) , Graph (disambiguation) , and Diagram For information about charts in Wikipedia, see Wikipedia:Graphs and charts. A pie chart. A chart is a graphical representation of data, in which the …   Wikipedia

• Fresnel integral — S(x) and C(x) The maximum of C(x) is about 0.977451424. If πt²/2 were used instead of t², then the image would be scaled vertically and horizontally (see below). Fresnel integrals, S(x) and C(x), are two transcendental functions named aft …   Wikipedia

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• Chi-squared test — Chi square test is often shorthand for Pearson s chi square test. A chi square test, also referred to as chi squared test or χ2 test, is any statistical hypothesis test in which the sampling distribution of the test statistic is a chi square… …   Wikipedia

• Pearson's chi-squared test — (χ2) is the best known of several chi squared tests – statistical procedures whose results are evaluated by reference to the chi squared distribution. Its properties were first investigated by Karl Pearson in 1900.[1] In contexts where it is… …   Wikipedia