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问题(巫山县2009年春季七年级数学试题)某校要了解580名七年级学生身高情况,从中抽取了80名学生进行检测.下列说法中正确的是().
Question (Wushan County, Spring 7th grade math test) A school to understand the 580 seventh grade students height, from which 80 students were selected for testing. The following statement is correct ().