题目内容
下列选项中,反映均数抽样误差大小的指标是
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SQL Error: select id,body,options from ***_enewstiku where sourceid='29721' and id < 2413913 and id<>'2413913' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29721' and id > 2413913 and id<>'2413913' order by id asc limit 5