如果一组数据不是对称分布的，根据切比雪夫不等式，对于 k =2，其意义是（）。 -题库考试答案搜索网

如果一组数据不是对称分布的，根据切比雪夫不等式，对于 k =2，其意义是（）。

单选题

2021-09-02 16:38

A、至少有 75%的数据落在平均数加减 2个标准差的范围之内
B、至少有 89%的数据落在平均数加减 2个标准差的范围之内
C、至少有 94%的数据落在平均数加减 2个标准差的范围之内
D、至少有 99%的数据落在平均数加减 2个标准差的范围之内

查看答案

正确答案

A

试题解析

标签：文才郑州工程技术学院统计学

感兴趣题目

Every deliberate act of wrongdoing by the master or any of the crew against the ship or cargo，without the authorization or privity of the Shipowner or his agent，is（）.

（）, or drum is used for hauling in or letting out the wires or ropes which will fasten the ship to the shore.

A salvor may be（）the whole or part of the payment due under Salvage Convention to the extent that the salvage operations have become necessary or more difficult because of fault or neglect on his part or if the salvor has been guilty of fraud or other dishonest conduct.

The （） is used for hauling in or letting out the wires or ropes.

Vessels must be（）valid certificate of nationality or certificated of registry or license.

When loading or discharging dry mud or cement，crew members should use goggles and（）.

Effects which are dutiable or subject to prohibitions or restrictions should be declared in （）.

（）are liable to be stoten, pilfered or may damaged due to improper handing or stowage.

Banks have no liability for any delay or loss caused by postal or telex failure.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

相关题目: boost的意思是:help or encourage to increase or improve; eloquent的意思是:fluent or persuasive in speaking or writing; A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.; 偏态系数测度了数据分布的非对称性程度。如果一组数据的分布是对称的，则偏态系数（　　）。; 设随机变量X1X2，相互独立同分布，且E（x1）=1，D(Xi）=1，（i=1,2，,令S9=∑Xi，则对任意 ξ＞0，从切比雪夫不等式直接可得（）; 设随机变量X1,X2,相互独立同分布，且E(X1)=1，D(X)=1,(i=1,2,,,令S= ∑ X1则对任意ε＞0，从切比雪夫不等式直接可得（）; 设随机变量X的方差等于1，由切比雪夫不等式可估计P{|X-E(X)|≥2}≤()。; 如果一组数据不是对称分布的，根据切比雪夫不等式，对于 k =2，其意义是（）。; 随机变量X的数学期望E（X）=μ，方差D（X）=σ2，则由切比雪夫不等式，有≤（）; 设随机变量X的方差为2，则根据切比雪夫不等式有估计（）; Mainly east 3 or 4 partly cloudy to overcast occasional rain（）slowly south moderate or good.; 病例对照研究进行统计性推断时不匹配分层资料总的OR值计算公式是; （）any case or suspected case of quarantinable disease，or any case of eruptive disease or any death be discovered，the local quarantine officer must be notified immediately．; Should any case or suspected case of quarantinable disease，or any case of eruptive disease or any death be discovered，the local Quarantine Officer must be（）immediately.; Masters are（）solely responsible for all damages or accidents of whatever kind resulting from the navigating or handling of their vessels by day or by night.; 系统中雷达状态包括Unknown、Operational（or ON）、Failed（or OFF）、Detached。; The carrier is liable for loss of or damage to the goods or delay in delivery caused by fire，（）the claimant proves that the fire arose from fault or neglect on the part of the carrier，his servants or agents.; Shutdown price（or point，or rule）停业价格（或停业点、停业原则）; 翻译：With Average or With Particular Average（WA or WPA）（）; （）shall be liable for loss of and damage to the Vessel and／or goods arising or resulting from inaccuracies in stating the description，quantity，weight，measurement or contents.

广告位招租WX:84302438

题库考试答案搜索网

免费的网站请分享给朋友吧