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Avis et commentaires pour d'étudiants pour Obtenir et trier des données par Université Johns-Hopkins

7,939 évaluations

À propos du cours

Before you can work with data you have to get some. This course will cover the basic ways that data can be obtained. The course will cover obtaining data from the web, from APIs, from databases and from colleagues in various formats. It will also cover the basics of data cleaning and how to make data “tidy”. Tidy data dramatically speed downstream data analysis tasks. The course will also cover the components of a complete data set including raw data, processing instructions, codebooks, and processed data. The course will cover the basics needed for collecting, cleaning, and sharing data....

Meilleurs avis


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.

See the videos for general presentation, but use the energy on the excersizes.

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351 - 375 sur 1,278 Avis pour Obtenir et trier des données

par Juan C I S

26 juil. 2020

Great choice if you want to learn to manage and download datasets in R

par Filipe M d L

19 juin 2020

Besides the problem with some missing links, the content is excellent.

par Siria S

8 févr. 2018

Nice, course. I learn a lot of skills I need for my job and university

par Jhon A P J

8 déc. 2016

Excellent course, I would like to see more content about cleaning data

par Rose G

31 mars 2020

Everything was new for me in this course, so I loved learning so much

par Ussia N

9 juil. 2019

Equiping me with the skills for my data science career...excellent !!

par jagadeesh p

20 févr. 2019

The course material is helpful enough to deploy skills in my research

par 20e

16 nov. 2017

learning a lot! And my post in the forum got helpful reply very soon!

par Ajay S

17 oct. 2017

Great course to get started on a career track to be a data scientist.

par Atman B

1 avr. 2019

This course is one important step towards becoming a Data Scientist.

par Ji H W

31 juil. 2018

Great lecture and help understanding concepts throughout the lecture

par Juan C L T

13 oct. 2017

great course, very useful and insightful; challenging final project.

par Dhrubajyoti M

16 mai 2017

Course material is good, assignment is better, mentors are the best!

par Осипов К Ю

21 janv. 2020

Perfect practical course! I got a lot of good practices and skills!

par Bojan B

14 oct. 2018

Great course with great materials. Easy to understand and to learn.

par Dr. B M

17 janv. 2022

Excellent course. This course is seriously exciting throughout !!!

par antonio q

19 déc. 2017

very clear, many examples and good exercise, assignments

thank you

par Emily K

9 nov. 2017

Should be before the 'R Programming' course - eases you in nicely.

par Jesus L S

24 oct. 2016

a must have course before applying any math model to our data! :-)

par Christophe K

10 févr. 2020

Very good course and first real challenge in this specialization.

par Wellintton P

12 mars 2018

great class for anyone learning the R language and data analytics

par Himanshu S

28 déc. 2017

Really good for folks, who wants to learn data manipulations in R

par Channaveer P

23 juil. 2017

Good one.... teaches you good skills to handle data and stress :)

par Shuo C

21 févr. 2018

This whole specialization is very informative! Highly recommend!

par Andreina D S

9 avr. 2019

Muy interesante, bastante información y todo muy bien explicado