Correction for Attenuation

Correction for Attenuation

Frederic P. Miller, Agnes F. Vandome, John McBrewster

     

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Издательство: Книга по требованию
Дата выхода: июль 2011
ISBN: 978-6-1337-9411-5
Объём: 68 страниц
Масса: 123 г
Размеры(В x Ш x Т), см: 23 x 16 x 1

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Correction for attenuation is a statistical procedure, due to Spearman (1904), to "rid a correlation coefficient from the weakening effect of measurement error" (Jensen, 1998), a phenomenon also known as regression dilution. Given two random variables X and Y, with correlation rxy, and a known reliability for each variable, rxx and ryy, the correlation between X and Y corrected for attenuation is . How well the variables are measured affects the correlation of X and Y. The correction for attenuation tells you what the correlation would be if you could measure X and Y with perfect reliability. If X and Y are taken to be imperfect measurements of underlying variables X' and Y' with independent errors, then rx'y' measures the true correlation between X' and Y'.

Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.