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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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476 - 500 sur 1,278 Avis pour Obtenir et trier des données

par Arushi A

25 nov. 2017

Amazing course content and assignments :)

par Ravi K

13 oct. 2016

Nice content and assignment!! Enjoyed it.

par Pengfei L

1 juin 2020

A good course for starter of R language;

par Mali N M

24 avr. 2020

very difficult to solve some assignments

par mandar v

8 avr. 2020

Great course good for getting introduced

par Neha P

13 févr. 2020

Good experience with excellent knowledge

par Ramy H

28 août 2017

Excellent delivery of the course content

par Prathamesh

16 juin 2017

Course Project was absolutely brilliant!

par Roland P

12 nov. 2017

Great course for hands-on data munching

par Alejandro C C

20 sept. 2016

Great way to learn how to optimize data

par Mauricio P

26 sept. 2017

Good material and excellent exercises.

par Sourav B

12 juil. 2017

Very important part taught intuitively

par Venkatesh

30 juin 2017

Very well designed for beginners in R.

par Hua S

13 juin 2017

I've learned so much from this course!

par Karel Š

3 févr. 2017

Nice and hard course, which is good :)

par Emanuele M

8 févr. 2016

Course is really well done and useful.

par Mohamed A

28 juil. 2017

Rally well course i sugeste it much .


31 oct. 2016

One of the best courses of the track!

par Сергей Ш

5 juil. 2016

It was kind of exhausting, but great.

par Juan P S

12 janv. 2016

Best instructors, best learning . . .

par Jerome C

6 juil. 2020

Roger is great. That's all I can say

par Silas S

14 nov. 2018

Fantastic course. Highly recommended

par Merin R

20 juil. 2017

Well written, and doesnt waste time.

par Jordi A C

25 déc. 2016

Very interesting. I've learnt a lot.

par 6RiL

7 nov. 2016

Amazing course!

Thanks for everthing.