Proposed new customs tariff

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Monograph

Identifikator:: 1016540337

URN:: urn:nbn:de:zbw-retromon-79957

Document type:: Monograph

Title:: Proposed new customs tariff

Place of publication:: London

Publisher:: Printed under the authority of His Majesty's Stationery Office by Darling and Son, Limited

Year of publication:: 1914

Scope:: 1 Online-Ressource (IV, 110 Seiten)

Digitisation:: 2018

Collection:: Economics Books

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Document type:: Monograph

Structure type:: Chapter

Title:: Section 3. Mineral products

Collection:: Economics Books

THEORY OF STATISTICS. that is (aD) i) (ap) (B) (B)’ and the other two identities may be similarly deduced. The student may find it easier to grasp the nature of the rela- tions stated if the frequencies are supposed grouped into a table with two rows and two columns, thus: — Attribute. Attribute. — Total. B B 2 (45) (48) (1) a (aB) (aB) i (a) CAT —— | CEE TEST ceo rm er c—— Total (B) 8) N Equation (1) states a certain equality for the columns; if this holds good, the corresponding equation (4B) (eB) 4) (a must hold for the rows, and so on. 2. The criterion may, however, be put into a somewhat different and theoretically more convenient form. The equation (1) expresses (AB) in terms of (B), (5), and a second-order fre- quency (4); eliminating this second-order frequency we have— (45) (ABYyL(AR) (4) (By (By Hy s.e. in words, “the proportion of 4’s amongst the B’s is the same as in the universe at large.” The student should learn to recog- nise this equation at sight in any of the forms— HY, (B) "& (4B) = (8) ) “am 2 AB AB)=2"t"1 (am) -E3 4B) 4) B) 4 Eh The equation (d) gives the important fundamental rule : If the attre- butes A and B are independent, the proportion of AB's tn the universe ts equal to the proportion of A’s multiplied by the proportion of B’s. 26 {.

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