【Huihui Lin】評論
數據正確~共變數=1.18 * (9.2^2) = 99.8752X與Y的相關係數=99.8752 / (9.2 * 14.3) = 0.7592故選C.
【Alovoe Ho】評論
r=ssxy / √ssx*ssy =(ssxy / ssx) * ( √ssx / ssy )nnnn =b1 * ( sx / sy