Hi all, I want to calculate the reliability of the following quotient: quotient=MEAN(item7, item8 ... item18 )/MEAN(item1, ... item6). The 18 items form a time series. Analogous to the testhalf-reliability I have devided the 18 items in odd an even items. I have calculated the quotient separately with the odd and the even items. At last I have interpreted the correlation between the quotient_odd and the quotient_even (+ correction: Spearman-Brown-Formula ) as the reliability of the quotient.
Is that correct or is there a better solution? Many Thanks in advance Frank Goldhammer . . ================================================================= Instructions for joining and leaving this list, remarks about the problem of INAPPROPRIATE MESSAGES, and archives are available at: . http://jse.stat.ncsu.edu/ . =================================================================
