题目内容
相关系数的计算公式为
2021-10-11
A.r=lXY/lXX
B.r=lXY/lYY
C.r=lXX/√(lXXlYY)
D.r=lXY/√(lXXlYY)
E.r=√[lXY/(lXXlYY)]
试卷相关题目
SQL Error: select id,body,options from ***_enewstiku where sourceid='25429' and id < 2141958 and id<>'2141958' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25429' and id > 2141958 and id<>'2141958' order by id asc limit 5