Introducing Statistics: A Graphic Guide by Eileen Magnello

Author:Eileen Magnello [Magnello, Eileen]
Language: eng
Format: epub
Tags: Mathematics, Probability & Statistics, General, Study Aids, Business & Economics, Statistics, History & Philosophy, Science, Comics & Graphic Novels, Nonfiction, Social Science, Research
ISBN: 9781848317734
Google: xPCmAwAAQBAJ
Amazon: 1848310560
Publisher: Icon Books
Published: 2005-10-15T00:00:00+00:00

The Pearsonian Family of Curves

By calculating the method of moments, Pearson also provided a variety of theoretical curves in varying graduations, which could then be superimposed onto an empirical curve to determine which gave the best “fit”. These curves were referred to as the “Pearsonian family of curves”.

The more important ones that remain an essential part of theoretical statistics today include:

Type III, the Gamma Curve, which he went on to use for finding the exact chi-square distribution (discussed later)

Type IV, the Family of Asymmetric Curves (created for Weldon’s data)

Type V, the Normal Curve

Type VII, now known as Student’s distribution for t-tests (examined later)

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