The book A Study of the Relation of Some Physical Defects to Achievement in the Elementar was written by author Jasper Newton Mallory Here you can read free online of A Study of the Relation of Some Physical Defects to Achievement in the Elementar book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is A Study of the Relation of Some Physical Defects to Achievement in the Elementar a good or bad book?
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Without Sheppard's tables, ^Yule, Introduction to the Theory of Statistics, page 352. "^Biometrika, Vol. IX, page 22. ^Biometrika, Vol. IX, page 25. *Biometrika, Vol. VII, page 436, and Vol. VII, page 385. 36 A Study of the Relation of Some Physical Defects it cannot be used; and, with them, the amount of work required is extreme unless Gibson's and Everitt's tables are also accessible. A Method of Correlation that is Adapted to a Variable and an Attribute. — The method used above does not take... advantage of the fact that one of the attributes was a meas- urable quantity. The scores yield themselves most readily to this kind of treatment. Pearson^ has given us a formula for utilizing this property and at the same time making it possible to correlate with a nonmeasurable attribute. - At first sight the formula seems complex, because it is derived from the equation of the normal curve and con- tains integral signs. It is as follows : ill K[ ^00 2 o-'i'-^ q /2" K[ ^00 z 0-2- w^ Jy y^ ^y 0-2 ~~ N /-oo y'^ J y e 2o-2'dy (1) 2 n (T-2 2 n e {y/--^Y ^2n J 00, , i (1 a) 4 y (2) /2n Jy/cr-ie ^' dy But p = r o-i -^ .
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