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

7,929 évaluations
1,311 avis

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.


25 oct. 2016

This course is really a challenging and compulsory for any one who wants to be a data scientist or working in any sort of data. It teaches you how to make very palatable data-set fro ma messy data.

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1001 - 1025 sur 1,274 Avis pour Obtenir et trier des données

par Marina V V m

20 déc. 2018

More swirl exercises! They are really helpful

par Manny R

10 août 2017

Time consuming and Challenging but very good.

par Patrick B

19 nov. 2019

Challenging assignment. Interesting material

par Gustavo P

26 sept. 2018

Good course, but se subject, not so mutch...

par Alex s

28 déc. 2017

The last project instructions were unclear.

par Mehul P

10 sept. 2017

Nice explanation on cleaning data activity.

par Niranjan

22 mai 2017

Great course materials!! Great effort!! :-)

par Marcos A V

15 mai 2017

I've learned much about reading data in R!

par Daren T

8 févr. 2016

was tougher than expected. i learnt a lot!

par Chong C F

7 sept. 2016

Well pack, but could have more practice.

par Andrew K

9 juin 2019

The class could have better uniformity.

par Guillaume H

2 déc. 2016

Useful technics to make things workable

par Tharindra P

15 avr. 2020

Great content and hands on experience.

par Ada

14 nov. 2016

Well done. Thanks for a good course.

par Lluís G

8 nov. 2016

Nice set of techniques and methods!

par Jehan H

11 janv. 2020

The course has useful information.

par John B

10 oct. 2020

Guidance and instruction is good.

par Rajib K

26 févr. 2017

need to be crisped, over all good

par Paras B

7 avr. 2018

Great course for the beginners!!

par Shahrokh N

10 févr. 2018

Nice course and worth taking it.

par Hakan S

24 oct. 2020

One of the best of Data Science

par Joseph L

15 sept. 2020

Videos weren't detailed enough.

par Laurent r

16 mai 2019

Good courses, I learned a lot!

par Amanyiraho R

13 janv. 2020

Best data cleaning technique.

par Nicholas C

29 mai 2019

Too much outdated content.