Procedures in employment psychology

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Monograph

Identifikator:: 173623112X

URN:: urn:nbn:de:zbw-retromon-112923

Document type:: Monograph

Author:: Bingham, Walter Van Dyke http://d-nb.info/gnd/123042593; Freyd, Max

Title:: Procedures in employment psychology

Place of publication:: Chicago & New York

Publisher:: Shaw

Year of publication:: 1926

Scope:: XI, 269 S

Digitisation:: 2020

Collection:: Economics Books

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Document type:: Monograph

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Title:: XIV. Validation of the measuring instruments (concluded)

Collection:: Economics Books

EMPLOYMENT PSYCHOLOGY cient to which it is applied is the true correlation of the two variables in question. P.E., may be obtained quickly from tables given by Pearson (135), Toops and Miner (204), and Rugg (157), or by graphic methods given by Pearson (135) and Toops (202). The probable error of a correlation ratio is (233, p. 352): I—n? 2 PEy=06745—— The probable error of biserial 7 is (86, p. 249) P.E.,=0.6745———— (30) 0.4748 % The formula for the probable error of the coefficient of mean square contingency is given by Kelley (86, p. 269). The formula given there applies to Pearson’s formula for the coefficient of mean square contingency, which is more com- plex than Yule’s. The general formula for the probable error of » obtained by the fourfold table method is given by Kelley (86, p. 258). The formula to be used when the division lines are at the medians (method of unlike signs) is (86, p. 257): Kelley gives the formulas for the probable error of # cor- rected for attenuation (86, pp. 209-210). We shall quote here only the formula for the probable error of corrected for attenuation by the use of formula 4. Let the corrected value of »,- be represented by 7. 7 I (32) PE, =osrstit I 72x. x, I + (Fo i TA ras Frits 1) LL Ton a Mt +(e 1 lope Ty, 0} 188"

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