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# 统计代写|一般统计学代写General Statistics代考|STA2023 Is a Picture Really Worth a Thousand Words? Why Illustrate Data?

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## 统计代写|一般统计学代写General Statistics代考|Is a Picture Really Worth a Thousand Words? Why Illustrate Data?

D efore this answer seeks to enlighten with words, take a look at a a graph of the scores (number of boxes of and a graph of the same.
Here are the data organized as a table.
\begin{tabular}{|l|c|}
\hline Week & Boxes Sold \
\hline Week 1 & 12 \
\hline Week 2 & 15 \
\hline Week 3 & 8 \
\hline Week 4 & 22 \
\hline
\end{tabular}
And Figure $26.1$ shows a simple line chart created using Excel.

We used a line chart because it is the best format for recording and visualizing change over time. You’ll learn how to create a simple line chart like this with just a few mouse clicks later on in this section of 100 Questions (see question #34).

The important question when comparing these two ways of representing data (the table and the chart) is, Which is easier to understand?

One of our most powerful, and useful, senses is sight. By our nature, we force ourselves to make sense out of visual stimuli. While the table above is compact and direct, by itself, it does not gives you sense of how the data may change over time (weeks in this case) and the magnitude of that change. The chart does both, with the line being either flat or going up or down by some magnitude from one point to another.

For example, the difference between weeks 3 and 4, where there was an increase of 14 boxes sold, becomes especially meaningful when you look at the steep slope of the line between weeks 3 and 4 as compared to, for example, between weeks 1 and 2 .

A visual representation of data allows us to see those changes quickly and easily. Always report summaries of data in tables and such but, if possible, chart them as well.

## 统计代写|一般统计学代写General Statistics代考|What Are Some Guidelines for Creating Effective Illustrations of Data?

here are hundreds of ways in which you can chart data to make it visually interesting yet not overwhelming. And while we will deal with charts like line charts, pie charts, and bar charts in later sections of 100 Questions (and Answers), here are five things to keep in mind regardless of the type of chart being created and the type of data being presented.

1. Plan, plan, and then plan some more. Get out some graph paper and actually draw out how you would like the chart to appear, including title, axes titles if necessary, patterns, size, and any other important element of the presentation.
2. Present one idea per chart. While you could present several ideas in one chart, focus on just one. The purpose of the chart will be clearer, and the likelihood that a reader will misunderstand the chart will be greatly reduced.
3. Make sure that the scales (the $\mathrm{x}$ – and $\mathrm{y}$-axes) are in proportion to one another. You want the vertical and horizontal axes to appear in a correct ratio (about 3:4) so that the chart does not look artificially contrived.
4. Simple is best. Your goal should be to present a chart that maximizes understanding and minimizes clutter and potential for misunderstanding. The chart should be simple-but not overly so-and convey one major idea. If you need to present additional information that will create visual clutter, save it for a footnote or accompanying text.
5. No junk. Chart junk is created when you use every available bell and whistle that the software program offers-including many different designs, patterns, shapes, and sizes-to create a chart. Using all these features may be fun, but they communicate a little bit of everything and nothing of anything. Be conservative: Use as few tools as necessary to get the message across.

## 统计代写|一般统计学代写General Statistics代考|What Are Some Guidelines for Creating Effective Illustrations of Data?

1. 计划，计划，然后再计划一些。拿出一些方格纸，实际画出您脪望图表显示的方式，包括标题、必要时的轴标题、模式、大 小和演示文稿的任何其他重要元彗。
2. 每个图表提出一个想法。虽然滺可以在一张图表中提出多个想法，但只关注一个。图表的目的会更清晰，读者误解图表的可 能性会大大降低。
3. 确保天平 (x- 和y-轴) 彼此成比例。佋希望垂直轴和水平轴以正确的比例（大约 3:4）显示，这样图表就不会显得人为设 计。
4. 简单是最好的。您的目标应该是呈现一个图表，以最大限度地理解并最大限度地减少混乱和误解的可能性。图表应该简单 本。
5. 没有垃圾。当怹使用软件程序提供的所有可用的铃声和口哨声（包括许多不同的设计、图案、形状和大小）来创建图表时， 就会创建图表垃圾。使用所有这些功能可能很有趣，但它们传达的只是一点点，什么都没有。保守一点: 使用屈可能少的工 具来传达信息。

## 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。