### 统计代写|数据可视化作业代写data visualization代考|Data Visualization in Practice

statistics-lab™ 为您的留学生涯保驾护航 在代写数据可视化data visualization方面已经树立了自己的口碑, 保证靠谱, 高质且原创的统计Statistics代写服务。我们的专家在代写数据可视化data visualization方面经验极为丰富，各种代写数据可视化data visualization相关的作业也就用不着说。

• Statistical Inference 统计推断
• Statistical Computing 统计计算
• (Generalized) Linear Models 广义线性模型
• Statistical Machine Learning 统计机器学习
• Longitudinal Data Analysis 纵向数据分析
• Foundations of Data Science 数据科学基础

## 统计代写|数据可视化作业代写data visualization代考|Accounting

Accounting is a data-driven profession. Accountants prepare financial statements and examine financial statements for accuracy and conformance to legal regulations and best practices, including reporting required for tax purposes. Data visualization is a part of every accountant’s tool kit. Data visualization is used to detect outliers that could be an indication of a data error or fraud. As an example of data visualization in accounting, let us consider Benford’s Law.
Benfords Law, also known as the First-Digit Law, gives the expected probability that the first digit of a reported number takes on the values one through nine, based on many real-life numerical data sets such as company expense accounts. A column chart displaying Benford’s Law is shown in Figure 1.5. We have rounded the probabilities to four digits. We see, for example, that the probability of the first digit being a 1 is $0.3010$. The probability of the first digit being a 2 is $0.1761$, and so forth.

Benford’s Law can be used to detect fraud. If the first digits of numbers in a data set do not conform to Bedford’s Law, then further investigation of fraud may be warranted. Consider the accounts payable (money owed the company) for Tucker Software. Figure $1.6$ is a clustered column chart (also known as a side-by-side column chart). A clustered column chart is a column chart that shows multiple variables of interest on the same chart, with the different variables usually denoted by different colors or shades of a color. In Figure 1.6, the two variables are Benford’s Law probability and the first digit data for a random sample of 500 of Tucker’s accounts payable entries. The frequency of occurrence in the data is used to estimate the probability of the first digit for all of Tucker’s accounts payable entries. It appears that there are an inordinate number of first digits of 5 and 9 and a lower than expected number of first digits of 1 . These might warrant further investigation by Tucker’s auditors.

## 统计代写|数据可视化作业代写data visualization代考|Finance

Like accounting, the area of business known as finance is numerical and data-driven. Finance is the area of business concerned with investing. Financial analysts, also known as “quants,” use massive amounts of financial data to decide when to buy and sell certain stocks, bonds, and other financial instruments. Data visualization is useful in finance for recognizing trends, assessing risk, and tracking actual versus forecasted values of metrics of concern.

Yahoo! Finance and other websites allow you to download daily stock price data. As an example, the file Verizon has five days of stock prices for telecommunications company Verizon Wireless. Each of the five observations includes the date, the high share price for that date, the low share price for that day, and the closing share price for that day. Excel has several charts designed for tracking stock performance with such data. Figure $1.7$ displays these data in a high-low-close stock chart, a chart that shows the high value, low value, and closing value of the price of a share of stock over time. For each date shown, the bar indicates the range of the stock price per share on that day, and the labelled point on the bar indicates closing price per share for that day. The chart shows how the closing price is changing over time and the volatility of the price on each day.

## 统计代写|数据可视化作业代写data visualization代考|Human Resource Management

Human resource management (HRM) is the part of an organization that focuses on an organization’s recruitment, training, and retention of employees. With the increased use of analytics in business, HRM has become much more data-driven. Indeed, HRM is sometimes now referred to as “people analytics.” HRM professionals use data and analytical models to form high-performing teams, monitor productivity and employee performance, and ensure diversity of the workforce. Data visualization is an important component of HRM, as HRM professionals use data dashboards to monitor relevant data supporting their goal of having a high-performing workforce.
A key interest of HRM professionals is employee churn, or turnover in an organization’s workforce. When employees leave and others are hired, there is often a loss of productivity as positions go unfilled. Also, new employees typically have a training period and then must gain experience, which means employees will not be fully productive at the beginning of their tenure with the company. Figure 1.8. a stacked column chart, is an example of a visual display of employee turnover. It shows gains and losses of employees by month. A stacked column chart is a column chart that shows part-to-whole comparisons, either over time or across categories. Different colors or shades of color are used to denote the different parts of the whole within a column. In Figure 1.8, gains in employees (new hires) are represented by positive numbers in darker blue and losses (people leaving the company) are presented as negative numbers and lighter blue bars. We see that January and July-October are the months during which the greatest numbers of employees left the company, and the months with the highest numbers of new hires are April through June.

Visualizations like Figure $1.8$ can be helpful in better understanding and managing workforce fluctuations.

## 广义线性模型代考

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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。