12条常用的GMAT数学概念介绍
<p> 对于<span word="GMAT">GMAT</span>数学而言，往往最难的不是解题本身，而是对于一些基本的<span word="GMAT">GMAT</span>数学概念的记忆，而且由于是英文表达，往往会让一些考生在基础知识上犯错，为此小编特收集整理了一些常用<span word="GMAT">GMAT</span>数学概念，分享给大家，希望对大家有所帮助。</p><p> <span word="GMAT">GMAT</span>数学概念1.<span word="mode">mode</span></p><p> 一堆数中出现频率最高的一个或几个数</p><p> <span word="GMAT">GMAT</span>数学概念2.<span word="range">range</span></p><p> 一堆数中最大和最小数之差</p><p> <span word="GMAT">GMAT</span>数学概念3.<span word="mean">mean</span></p><p> <span word="arithmatic">arithmatic</span> <span word="mean">mean</span></p><p> <span word="geometric">geometric</span> <span word="mean">mean</span> <span word="n">n</span>个数之积的<span word="n">n</span>次方根</p><p> <span word="GMAT">GMAT</span>数学概念4.<span word="median">median</span></p><p> 将一堆数排序之后，正中间的一个数， 或者中间两个数的平均数/2=6 )</p><p> <span word="GMAT">GMAT</span>数学概念5.<span word="standard">standard</span> <span word="error">error</span></p><p> 一堆数中，每个数与平均数的差的绝对值之和，除以这堆数的个数<span word="e">e</span>.<span word="g">g</span>. <span word="standard">standard</span> <span word="error">error</span> <span word="of">of</span> 0,2,5,7,6 <span word="is">is</span>: /5=2.4 )</p><p> <span word="GMAT">GMAT</span>数学概念6.<span word="standard">standard</span> <span word="variation">variation</span></p><p> 一堆数中，每个数与平均数之差的平方之和，再除以<span word="ne">ne</span>.<span word="g">g</span>. <span word="standard">standard</span> <span word="variation">variation</span> <span word="of">of</span> 0,2,5,7,6 <span word="is">is</span>:_ 2 2 2 2 2_|_ ++++_|/5=6.8</p><p> <span word="GMAT">GMAT</span>数学概念7.<span word="standard">standard</span> <span word="deviation">deviation</span></p><p> 就是<span word="standard">standard</span> <span word="variation">variation</span>的平方根</p><p> 标准方差的公式：<span word="d">d</span>^2=/<span word="n">n</span></p>
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