Este curso faz parte do Programa de cursos integrados Data Science

oferecido por

Programa de cursos integrados Data Science

Johns Hopkins University

Informações sobre o curso

4.7

3,951 ratings

•

590 reviews

This course covers the essential exploratory techniques for summarizing data. These techniques are typically applied before formal modeling commences and can help inform the development of more complex statistical models. Exploratory techniques are also important for eliminating or sharpening potential hypotheses about the world that can be addressed by the data. We will cover in detail the plotting systems in R as well as some of the basic principles of constructing data graphics. We will also cover some of the common multivariate statistical techniques used to visualize high-dimensional data....

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Legendas: English, Chinese (Simplified)

- Apply cluster analysis techniques to locate patterns in data
- Make graphical displays of very high dimensional data
- Understand analytic graphics and the base plotting system in R
- Use advanced graphing systems such as the Lattice system

Cluster AnalysisGgplot2R ProgrammingExploratory Data Analysis

Comece imediatamente e aprenda em seu próprio cronograma.

Redefinir os prazos de acordo com sua programação.

Aprox. 15 horas restantes

Legendas: English, Chinese (Simplified)

Seção

This week covers the basics of analytic graphics and the base plotting system in R. We've also included some background material to help you install R if you haven't done so already. ...

15 vídeos (Total de 109 min), 6 leituras, 7 testes

Introduction1min

Installing R on Windows (3.2.1)3min

Installing R on a Mac (3.2.1)1min

Installing R Studio (Mac)3min

Setting Your Working Directory (Windows)7min

Setting Your Working Directory (Mac)7min

Principles of Analytic Graphics12min

Exploratory Graphs (part 1)9min

Exploratory Graphs (part 2) 5min

Plotting Systems in R9min

Base Plotting System (part 1)11min

Base Plotting System (part 2)6min

Base Plotting Demonstration16min

Graphics Devices in R (part 1)5min

Graphics Devices in R (part 2)7min

Welcome to Exploratory Data Analysis10min

Syllabus10min

Pre-Course Survey10min

Exploratory Data Analysis with R Book10min

The Art of Data Science10min

Practical R Exercises in swirl Part 110min

Week 1 Quiz20min

Seção

Welcome to Week 2 of Exploratory Data Analysis. This week covers some of the more advanced graphing systems available in R: the Lattice system and the ggplot2 system. While the base graphics system provides many important tools for visualizing data, it was part of the original R system and lacks many features that may be desirable in a plotting system, particularly when visualizing high dimensional data. The Lattice and ggplot2 systems also simplify the laying out of plots making it a much less tedious process....

7 vídeos (Total de 61 min), 1 leitura, 6 testes

Lattice Plotting System (part 2)6min

ggplot2 (part 1)6min

ggplot2 (part 2)13min

ggplot2 (part 3)9min

ggplot2 (part 4)10min

ggplot2 (part 5)8min

Practical R Exercises in swirl Part 210min

Week 2 Quiz20min

Seção

Welcome to Week 3 of Exploratory Data Analysis. This week covers some of the workhorse statistical methods for exploratory analysis. These methods include clustering and dimension reduction techniques that allow you to make graphical displays of very high dimensional data (many many variables). We also cover novel ways to specify colors in R so that you can use color as an important and useful dimension when making data graphics. All of this material is covered in chapters 9-12 of my book Exploratory Data Analysis with R....

12 vídeos (Total de 77 min), 1 leitura, 4 testes

Hierarchical Clustering (part 2)5min

Hierarchical Clustering (part 3)7min

K-Means Clustering (part 1)5min

K-Means Clustering (part 2)4min

Dimension Reduction (part 1)7min

Dimension Reduction (part 2)9min

Dimension Reduction (part 3)6min

Working with Color in R Plots (part 1)4min

Working with Color in R Plots (part 2)7min

Working with Color in R Plots (part 3)6min

Working with Color in R Plots (part 4)3min

Practical R Exercises in swirl Part 310min

Seção

This week, we'll look at two case studies in exploratory data analysis. The first involves the use of cluster analysis techniques, and the second is a more involved analysis of some air pollution data. How one goes about doing EDA is often personal, but I'm providing these videos to give you a sense of how you might proceed with a specific type of dataset. ...

2 vídeos (Total de 55 min), 2 leituras, 2 testes

Practical R Exercises in swirl Part 410min

Post-Course Survey10min

4.7

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por CC•Jul 29th 2016

This is the second course I have taken from Roger Peng and both were outstanding. I have a strong math background, but not much of a background in stats, but this course was very approachable for me.

por Y•Sep 24th 2017

Very good course! It provide me the foundation in learning how to plot and interpret data. This will definitely strengthen my "R programming" to generate publication type figure for my genomics data!

The mission of The Johns Hopkins University is to educate its students and cultivate their capacity for life-long learning, to foster independent and original research, and to bring the benefits of discovery to the world....

Ask the right questions, manipulate data sets, and create visualizations to communicate results.
This Specialization covers the concepts and tools you'll need throughout the entire data science pipeline, from asking the right kinds of questions to making inferences and publishing results. In the final Capstone Project, you’ll apply the skills learned by building a data product using real-world data. At completion, students will have a portfolio demonstrating their mastery of the material....

When will I have access to the lectures and assignments?

Once you enroll for a Certificate, you’ll have access to all videos, quizzes, and programming assignments (if applicable). Peer review assignments can only be submitted and reviewed once your session has begun. If you choose to explore the course without purchasing, you may not be able to access certain assignments.

What will I get if I subscribe to this Specialization?

When you enroll in the course, you get access to all of the courses in the Specialization, and you earn a certificate when you complete the work. Your electronic Certificate will be added to your Accomplishments page - from there, you can print your Certificate or add it to your LinkedIn profile. If you only want to read and view the course content, you can audit the course for free.

What is the refund policy?

Is financial aid available?

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