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ISBN-13: 9781881228493

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J. and W. M Yen. 1979. fntroduc6on to Measurement Theory. M. J. and A. Tobi_s. 2000. sg143: Cmnbach's alpha one-sided confidence interval. Stata Technical Bulletin 55: 126427. i Crdnb_ch. L. J. 1951. Coffficient alpha and the internal structure of tests. Psychome_ka t6: 297-334. Ku_er,iG. F. and M. W. _Jchardson. 1937. The theory' of the estimation of test reliability. Psychometrika 2:151-I60. R. A. 1932. A technique for the measurement of attitudes. Archives of Psychology 140: 5-55. A. , J. E.

Casewise is a shorthand for rain(k) where k is the number of variables in varlist. reverse (varlist) specifies that the signs (directions) of the variables (items) in varlist should be reversed. Any variables specified in reverse() that are not also included in alpha's varlist are ignored. std specifies that the items in the scale are to be standardized (mean 0, variance 1) before summing. 19 iI , l] . i I _he -- Cr__lch_ Rereads _,ro_bach's alpha (t2ronbach 1951) assesses the reliability of a summative rating (Likert 1932) scal_ domposed of the variables (called items) specified.

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Stata Reference A-G Release 7 by Stata Press

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