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

7,938 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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451 - 475 sur 1,278 Avis pour Obtenir et trier des données

par oscar l

12 sept. 2017

excelente curso claro, completo y muy dinámico.

par Henrique A

27 nov. 2016

Great course! I learned a lot from it! Thanks!!!

par Giri b

3 avr. 2016

A good course for dealing with different types o

par Meri A

17 juin 2019

I find it very challenging and I learned a lot.

par Royce S

11 oct. 2018

Very useful content and challenging assignments

par Laro N P

10 mars 2018

Good, like other courses of this specialization

par Connor B

5 août 2019

Great next step and enjoyed the course project

par Naveen S

10 déc. 2020

Good course to understand the data processing

par vijaygopal

11 sept. 2017

The course is great for beginners. Thank you!

par Sean

14 nov. 2019

Challenging but rewarding! Great community.

par Janet A R

27 déc. 2018

Thanks!!! It opened a whole new world to me!

par Abdullah

8 févr. 2018

thank very much and this is very good course

par Juliana C

25 sept. 2017

Great course to learn how to manipulate data

par Francisco J G C

31 juil. 2020

Excellent course with great study material.

par 胡泽重

7 mai 2020


par Yuyang L

12 sept. 2016

Thanks! I learnt a lot of practical skills/

par Sindre F

7 avr. 2016

Very useful and relevant knowledge to have!

par anjali t

5 oct. 2020

very well presented and taught. thank you!

par Ziwen L

8 août 2019

The process of learning is very rewarding.

par lotfi R

24 mars 2018

nice course for the cleaning data using R,

par Abhishek B

20 déc. 2017

Gets you started on basics. Good practice.

par Md G M

5 juil. 2017

Very descriptive with good study material.

par Light0617

7 août 2016

It taught a lot of tools and introductions

par M M

27 janv. 2016

One of the best courses for Data sciences!

par Robert J C

10 juin 2019

Good to play with R for making tidy data.