Posted on Categories:Survey sampling, 抽样调查, 统计代写, 统计代考

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As we understand, vide Chaudhuri $(2000,2015)$, adaptive sampling was introduced by Thompson (1990) and later further developed by Thompson (1992), Thompson and Seber (1996), Salehi and Seber (1997, 2002, 2013), Chaudhuri (2000, 2015) among others including Chaudhuri and Saha (2004), Chaudhuri, Bose and Dihidar (2005), Chaudhuri, Bose and Ghosh (2004, 2005) et al.

Suppose we intend to suitably estimate the numbers of people engaged in various types of small-scale industrial enterprises in the rural unorganized sector in certain under-developed or developing countries. This is necessary in assessing the magnitudes and values of gross and net domestic national products. In an Indian state many may earn their livelihoods as iron or goldsmiths or by manufacturing stone chips or metal screws in the villages as private craftsmen and craftswomen. Though in India there is a National Sample Survey Office (NSSO) every year conducting nationwide big surveys in both rural and urban areas in every Indian state or union territory (UT),such surveys hardly capture such earners industry-wise in sufficient numbers. NSSO-sampled villages may not contain enough goldsmiths and so their contributions to GDP may be significantly underestimated.

## 统计代写|抽样调查代考Survey sampling代写|Network Samplin

Suppose we need to have a first-hand assessment of the socio-economic conditions of the petty pedlars carrying small merchandise visibly in the cities, towns, suburbs and in moving trains and buses. An NSSO-type nationwide annual survey may not be very effective here. While canvasing questionnaires in selected households enough pedlars may not be procured to gather immense data of relevance. But it is common knowledge that pedlars buy things from specified sellers or sell to specific stores. So, it may be a good idea to make a list or frame of such sellers and/or stores, take samples from them and through them contact the pedlars and gather from them the data of relevance.

Secondly, if we need to have a scientific survey about costs of treatment of household inmates in a city, town or villages even a good sample of households may not fetch an adequate sample of sufferers from important diseases like cancer, heart attack, cerebral attack, gallstone, tuberculosis and the like by just knocking at individual household doors. ‘network sampling’, cf Chaudhuri (2015), should offer a better bid. The term ‘network’ here is, quite different from the term ‘network’ relevant in ‘adaptive sampling’.

# 抽样调查代写

## 统计代写|抽样调查代考Survey sampling代写|Network Samplin

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## MATLAB代写

MATLAB 是一种用于技术计算的高性能语言。它将计算、可视化和编程集成在一个易于使用的环境中，其中问题和解决方案以熟悉的数学符号表示。典型用途包括：数学和计算算法开发建模、仿真和原型制作数据分析、探索和可视化科学和工程图形应用程序开发，包括图形用户界面构建MATLAB 是一个交互式系统，其基本数据元素是一个不需要维度的数组。这使您可以解决许多技术计算问题，尤其是那些具有矩阵和向量公式的问题，而只需用 C 或 Fortran 等标量非交互式语言编写程序所需的时间的一小部分。MATLAB 名称代表矩阵实验室。MATLAB 最初的编写目的是提供对由 LINPACK 和 EISPACK 项目开发的矩阵软件的轻松访问，这两个项目共同代表了矩阵计算软件的最新技术。MATLAB 经过多年的发展，得到了许多用户的投入。在大学环境中，它是数学、工程和科学入门和高级课程的标准教学工具。在工业领域，MATLAB 是高效研究、开发和分析的首选工具。MATLAB 具有一系列称为工具箱的特定于应用程序的解决方案。对于大多数 MATLAB 用户来说非常重要，工具箱允许您学习应用专业技术。工具箱是 MATLAB 函数（M 文件）的综合集合，可扩展 MATLAB 环境以解决特定类别的问题。可用工具箱的领域包括信号处理、控制系统、神经网络、模糊逻辑、小波、仿真等。