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在初中数学教科书(八年级下册,青岛2005年1月第1版,2010年12月第6次印刷)中有下列说法:(1)“数据的离散程度越大,表示数据分布的范围越大”(见第93页).(2)“极差越大,数据的离散程度越大”(见第95页).笔者经过深入探究,认为以上所列的两个说法均失之偏颇作为商榷,现谈谈自己的看法不当之处,敬请指正众所周知,极差是一组数据波动范围的长度,可作为其波动范围的特征值.极差越大,数据的波动范围
In junior high school mathematics textbooks (eighth grade, Qingdao January 2005 first edition, December 2010 sixth printing) the following statement: (1) “The greater the degree of data dispersion, said the scope of data distribution (See page 93). (2) ”The greater the difference, the greater the discrepancy of the data." (See page 95.) The author explores further and concludes that both of the above statements Loss of bias as a matter of debate, now talk about their views inappropriate, please correct me As we all know, very poor is the length of a range of data fluctuations can be used as the eigenvalues of its fluctuation range. The greater the difference between the data fluctuation range