2 mai 2020
This course provides an introduction of some important concepts and tools on a very important aspect of data science: cleaning and organizing data before any analysis. A must for any data scientist.
1 févr. 2016
Easy, mostly instructive Course. The Assignments and quizzes are quite good, and illustrates the lessons very well.\n\nSee the videos for general presentation, but use the energy on the excersizes.
par Brett M•
12 juil. 2016
Really fantastic even as an experienced R user. This is helping me remould my habits and break some of the bad ones. Thank you so much!
par Sajal J•
14 août 2020
Very good course. The end course project was also very good as it gives a good experience in loading and cleaning a real-life dataset.
par Ricardo L•
29 déc. 2019
The most important information I learned was the tidy data standard. Very useful and clear. It will make the analysis process easier.
par Michael A C R•
17 août 2020
Fue una experiencia maravillosa, llena de actividades y lecciones muy útiles para obtener y limpiar bases de datos. Muy provechoso.
par Rumian R•
13 août 2020
Massively underrated - I appreciated this course and I learned a lot. I now find it baffling how taken-for-granted data tidying is.
par Georgios P•
24 sept. 2018
The most crucial part of statistical inference or machine learning is tidy data and this course provides the basic tidy data rules!
par Yanying J•
3 févr. 2020
It's useful and practical! Especially, the swirl excerises offered not only the method, but also a clear example of data cleaning.
par Andrew C•
8 janv. 2019
The class was very interesting and useful, although I would have liked more opportunities to do web scraping in the problem sets.
par Shaikh M I•
21 nov. 2016
This course is really helpful and very practical. Provides industry standard information and adheres to the scientific principles.
par Jorge L P d l T•
21 mai 2020
Managing Data has be a passion for me, this course for sure, opened me new skills using the powerful features of the R language.
par Shashikesh M•
27 mai 2017
This course is one another step forward towards my data science specialization. I'm really enjoying my study about data Science.
par Dimitrios G•
3 mars 2017
Challenging and very educational. Needs a better explanation on the final peer assignment. Otherwise a great overall experience!
par CAPO-CHICHI F N•
14 avr. 2020
I am very happy to have done this course, I discovered something new and I have new skills in Data Analysis thank you very much
15 oct. 2017
It gave me an overview of how to getting and cleaning data.The course is best suited for anyone who is a novice in data science
par Massimo M•
9 août 2017
Great course, everything is well explained ant the exercises are challenging enough to really understand what you are studying.
par Shelby B•
26 avr. 2017
I am so glad this course was available. Otherwise, I would noy have had an opportunity to build a data set in my everyday work
par Brayan S O P•
19 avr. 2020
It is an excellent course with all the basics and more that one needs to get started with the acquisition and cleaning of data
par Ajinkya D•
27 nov. 2016
Good course material. A very good project at the end of the course that gave an idea about cleaning a real life huge dataset
par KELVIN H•
25 mars 2018
good course for learning about tidy data. But have to say that the instructions for the coursework is not exactly very clear.
par Igor T•
8 janv. 2017
Really great course which helps to understand basics of data tidying. I've also enjoyed regex explanation, it's really clear!
par Victor A d S P•
12 déc. 2019
Great course, some background needed. If you are taking the Data Science specialization program, then this is a great catch.
par William H•
5 août 2019
Thank you for the case study, very valuable to me to see how you downloaded all the data and began your exploratory analysis
par Bill S•
25 mai 2017
I greatly enjoyed this course and I really got a lot of hands-on practice that I can apply in a real-world work environment.
par Jim M•
26 avr. 2020
The content is very important when working with Big Data, yet I think JHU is unique in the importance paid to the concepts.
par Sebastian O V•
6 août 2018
Great course teaches intermediate and andvanced skills to manipullate and clean data. Begginers should make an extra effort