相关系数:取值范围 Correlation coefficients: Possible values 如果p=1.0p=10 o 2=W,22+WEOE D 20-2+ 2WDWE DUE Opl=(WDOD+ WEOE) p WDOd +WEOE 8-148-14 相关系数：取值范围 Correlation Coefficients: Possible Values 如果 r = 1.0 If r = 1.0 sp 2 = wＤ 2sＤ 2 + wＥ 2sE 2 + 2wDwE σD σ E sp = wＤsＤ + wＥsE sp 2 = (wＤsＤ + wＥsE) 2