Inkassotarif für Asien, Afrika und Australien

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Monograph

Identifikator:: 178203353X

URN:: urn:nbn:de:zbw-retromon-174918

Document type:: Monograph

Title:: Inkassotarif für Asien, Afrika und Australien

Place of publication:: Hamburg

Year of publication:: 1927

Scope:: 55 S.

Digitisation:: 2022

Collection:: Economics Books

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Document type:: Monograph

Structure type:: Chapter

Title:: Afrika

Collection:: Economics Books

THEORY OF STATISTICS. EXERCISES. 1. Deduce equation (11) from the equations for transformation of co-ordinates without assuming the normal distribution. (A proof will be found in ref. 10.) 2. Hence show that if the pairs of observed values of ; and x, are repre- sented by points on a plane, and a straight line drawn through the mean, the sum of the squares of the distances of the points from.this line is a minimum if the line is the major principal axis. 3. The coefficient of correlation with reference to the principal axes being zero, and with reference to other axes something, there must be some pair of axes at right angles for which the correlation is a maximum, ¢.e. is numerically greatest without regard to sign. Show that these axes make an angle of 45° with the principal axes, and that the maximum value of the correlation is— L3H ~ 343 4. (Sheppard, ref. 12.) A fourfold table is formed from a normal correla- tion table, taking the points of division between 4 and a, B and B, at the medians, so that (4)=(a)=(B)=(B)=N/2. Show that DJ T= COS (1 yi 234

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