一道英国的数学题7 The times in minutes taken by 11 people to wait to be served at a supermarkcheckout are listed in order:1,1,2,3,3,3,4,5,5,6,8(a) Find:(i) the lower quartile..(ii) the interquartile range..

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一道英国的数学题7Thetimesinminutestakenby11peopletowaittobeservedatasupermarkcheckoutarelistedinorder:1,1,2,

一道英国的数学题7 The times in minutes taken by 11 people to wait to be served at a supermarkcheckout are listed in order:1,1,2,3,3,3,4,5,5,6,8(a) Find:(i) the lower quartile..(ii) the interquartile range..
一道英国的数学题
7 The times in minutes taken by 11 people to wait to be served at a supermark
checkout are listed in order:
1,1,2,3,3,3,4,5,5,6,8
(a) Find:
(i) the lower quartile
.
.
(ii) the interquartile range
.
.

一道英国的数学题7 The times in minutes taken by 11 people to wait to be served at a supermarkcheckout are listed in order:1,1,2,3,3,3,4,5,5,6,8(a) Find:(i) the lower quartile..(ii) the interquartile range..
先把题翻一遍吧,)
11个人在超市等待服务的分钟数列于下:
1,1,2,3,3,3,4,5,5,6,8
(a)找到:
(i)较小的四分位数
(ii)四分位数间域(呵呵,我不知道这个词对应的中文是什么,就自己给起了个名字)
其实就是几个概念的问题:
首先,quartile,也就是四分位数的概念.这个是指能将你的一个数列按照中位数分成四份的三个数,求法如下:
1、先求中位数,对你的数列来说是第六个数,也就是3,记为Q2
2、对中位数Q2左边的数列求中位数,对你的数列来说是第三个,也就是2,记为Q1
3、对中位数Q2右边的数列求中位数,对你的数列来说是第九个,也就是5,记为Q3
好了,现在Q1、Q2和Q3已经把你的数列分成了四个部分了,这三个数就叫做四分位数,也就是quartile.题目要求找出较小的,那就是Q1了,也就是2.
下面是interquartile range这个概念,其实简单来说就是Q3-Q1,对你的数列来说是5-2得3.
要注意的是对一个偶数个数的数列求中位数需要采取一定的措施,这个时候的中位数应该是中间两个数的平均数.具体的你可以从下面的参考资料中找到:)

一道英国的数学题7 The times in minutes taken by 11 people to wait to be served at a supermarkcheckout are listed in order:1,1,2,3,3,3,4,5,5,6,8(a) Find:(i) the lower quartile..(ii) the interquartile range.. 哪个能向我详细介绍一下英国泰晤士报(the Times)的情况? 一道初中的英文数学题,高手来,很简单,就要答案One interger is 3 more than another integer.The difference in their squares is 6 more than 5 times the larger.Find the integers.就要答案 一道头晕的SAT1数学题~A grocery customer spent a total of $9.06 for ground beef and coffee.The coffee cost 2 times as much per pound as the ground beef,and the customer bought 3 times as many pounds of ground beef as pounds of coffee.How much, 这是一道英文数学题.厉害的来,The sides of a square are X feet long.Write an expression that represents the area of the square in square feet if the lenght of the side of the square is changed to one less than three times the lenght of the 一道很简单的sat数学题!The first term in the sequence above us a,and each term after the first is 3 times the preceeding term.If the sum of the first 5 terms is 605,what is the value of 一道数学题,计算的. 一道数学题,求和的. 一道三角的数学题 一道圆锥曲线的数学题 一道大学的数学题 一道实数的数学题 一道可爱的数学题. 一道虚数的数学题 一道大一的数学题, 一道数学题,画蓝圈的 一道GMAT的数学题 一道数学题,有没会做的