题目内容
列联表X2检验的自由度是
2022-01-05
A.1
B.(行数-1)x (列数-1)
C.(行数-l)x列数
D.样本含量-1
E.格子数-1
试卷相关题目
SQL Error: select id,body,options from ***_enewstiku where sourceid='30596' and id < 2470204 and id<>'2470204' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30596' and id > 2470204 and id<>'2470204' order by id asc limit 5