在单因素方差分析中，涉及的两个变量是（ ）。[山东大学2019研]

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30463' and id < 2461335 and id<>'2461335' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30463' and id > 2461335 and id<>'2461335' order by id asc limit 5