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The International General Certificate of Secondary Education (IGCSE) is an English language based secondary qualification similar to the GCSE and is recognised in the United Kingdom as being equivalent to the GCSE for the purposes of recognising prior attainment. [1] It was developed by Cambridge Assessment International Education.
Karl Pearson FRS FRSE [1] (/ ˈ p ɪər s ə n /; born Carl Pearson; 27 March 1857 – 27 April 1936 [2]) was an English biostatistician, eugenicist, and mathematician. [ 3 ] [ 4 ] He has been credited with establishing the discipline of mathematical statistics .
Linear algebra is the branch of mathematics concerning linear equations such as: linear maps such as: and their representations in vector spaces and through matrices. [ 1 ][ 2 ][ 3 ] Linear algebra is central to almost all areas of mathematics.
A Pearson density p is defined to be any valid solution to the differential equation (cf. Pearson 1895, p. 381) ′ () + + + + = ()with: =, = = +, =. According to Ord, [3] Pearson devised the underlying form of Equation (1) on the basis of, firstly, the formula for the derivative of the logarithm of the density function of the normal distribution (which gives a linear function) and, secondly ...
In statistics, the correlation ratio is a measure of the curvilinear relationship between the statistical dispersion within individual categories and the dispersion across the whole population or sample. The measure is defined as the ratio of two standard deviations representing these types of variation. The context here is the same as that of ...
Pearson Education, known since 2011 as simply Pearson, is the educational publishing and services subsidiary of the international corporation Pearson plc.The subsidiary was formed in 1998, when Pearson plc acquired Simon & Schuster's educational business and combined it with Pearson's existing education company Addison-Wesley Longman. [1]
In probability theory and statistics, a normal distribution or Gaussian distribution is a type of continuous probability distribution for a real-valued random variable.The general form of its probability density function is = ().
Pearson himself noted in 1895 that although the term "histogram" was new, the type of graph it designates was "a common form of graphical representation". [5] In fact the technique of using a bar graph to represent statistical measurements was devised by the Scottish economist , William Playfair , in his Commercial and political atlas (1786).