the weight of that GRE数学题中boxplots/box-and-whisker the number of times a value appears in the list is called the weight of that value.

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theweightofthatGRE数学题中boxplots/box-and-whiskerthenumberoftimesavalueappearsinthelistiscalledtheweigh

the weight of that GRE数学题中boxplots/box-and-whisker the number of times a value appears in the list is called the weight of that value.
the weight of that GRE数学题中
boxplots/box-and-whisker
the number of times a value appears in the list is called the weight of that value.

the weight of that GRE数学题中boxplots/box-and-whisker the number of times a value appears in the list is called the weight of that value.
the weight of that value是说比重
boxplots 是箱形图
bx-and-whisker plots是盒须图
后两个图都是简单统计里面的概念

weight 我想应该是要理解为权重吧。。

价值的重量
求整句句子
箱线图
一个值列表中出现的次数称为它的重量

Box plot/(box-and-whisker plots) ,可译成箱线图      箱线图是一种可用于归纳数据分布的信息,由一个矩形箱和几条线段组合而成。

the number of times a value appears in the list is called the weight of that value


意思是出现在列表中的次数值称为该值的权重 !

下面是一个GRE的关于权重的例题,可以学习一下。

   



思考以下表16个数。

2,4,4,5,7,7,7,7,7,7,8,8,9,9,9,9

这组数据中仅有6个不同的值:2,4,5,7,8,和9,这组数据的平均值可以被计算为

(2×1+4×2+5×1+7×6+8×2+9×4)/(1+2+1+6+2+4)=109/6=6.8125

在数据中出现的次数值,或频率,称为该值的权重 。 这样的16个数字的平均值的值2,4,5,7,8,和9中,其中各自的权重是1,2,1,6,2和4的加权平均值。注意的总和权重是数字的列表中,16个数字。

均值只能被数据中远高于或低于均值的其余数据影响,因为这些值直接对数据的总和有显著影响, 相反, 中位数是一种相对不受数据中异常高的或异常低的数据影响的的计算方法!

计算n个数 ,一阶从最小到最大的数字的位数。 如果n是奇数,则中值是数字的数据顺序中的中间数。

如果n是偶数,则有两个中间的数字,并且平均是这两个数的平均值。

例如4.2.3:例如4.2.1中的五个数字递增的顺序列出的4,4,6,7,10,所以中位数是6,中间的数字。 注意,如果在列表中的号码10被替换为数字24,平均增加从6.2到

(4+4+6+7+24)5=45/5=9

但中位数依然等于6。这个例子显示了如何中位数是相对不受一个异常大的数据影响的值。

中位数,作为“中间值”的数字的顺序列表,将所述列表分为大致相等的两部分。 然而,如果中值等于该数据的值中的一个,并且开始重复在列表中,那么数据的上方和下方的中位数的数字可以是相当不同的。 见实施例4.2.2,其中位数为7,但数据中4个是小于7,6个数据都大于7。

这个数值是这组数据中最频繁出现的数值!




很高兴能帮到你,如果还有什么疑问欢迎直接向我提问!祝你GRE顺利,请采纳~!

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