根据观测结果，已建立Y对X的回归方程Y^=2.3+5.0X，则X变化1个单位，Y平均变化单位个数为

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='10716' and id < 855852 and id<>'855852' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='10716' and id > 855852 and id<>'855852' order by id asc limit 5