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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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301 - 325 sur 1,278 Avis pour Obtenir et trier des données

par Vitalii S

20 juil. 2017

This course gave me an insights regarding data cleaning. Very grateful, thank you!

par Karthic C

17 juil. 2017

Well put together course. Happy and eager to finish the rest of the specialization

par Thor R

18 janv. 2019

Useful, the course is as much an introduction to R- part 2 as about cleaning data

par Raunak S

5 oct. 2018

excellent course to get started with to learn the basic concepts of data tidying.

par Sunder R V

27 août 2017

Enjoyed the course and learnt quite a few things in my quest for "Data Analytics"

par Roberto D

21 juin 2017

Very useful for deciding best methods pulling data and consistently massage data.

par Jairo A V G

25 juin 2020

an excellent course that allowed me to expand my knowledge and learn new things.

par Premkumar S

27 sept. 2018

Excellent course with some great exercises put together that are very practical.

par xiang

31 mars 2016

Nice one. I would like to have some more information like getting data from API

par Waeibrorheem W

12 oct. 2020

It was an amazing learning experience. I really learn so much from this course.

par Gustavo d P P

13 sept. 2019

Muito bom!

Aprendi a usar dplyr e agora minha vida se tornou muito mais fácil!!!

par Yi-Yang L

8 mars 2017

Good! Actually I think this course is useful no matter what other people think.

par Bruno

4 juin 2016

It's a good course, with right amount of exercises and well explained classes.

par Prohnițchi V

2 oct. 2017

Great course. Have learned a lot and discovered powerful tools and approaches.

par Matthew

22 févr. 2017

Solid course overall which covers in a high level many data gathering methods.

par Bill K

10 févr. 2016

Great course with good lectures and labs. Don't forget the swirl assignments!

par Diego A Q

3 juin 2019

Very useful for every day data arrangements and data downloads from Internet.

par Siva M

6 déc. 2018

It is great time. The course content was amazing. I learnt lot of new things.

par Joseph G N

5 nov. 2018

The course has amazing exercise in every week. You can learn a lot with them.

par Raphael P

23 juin 2018

I started with this course to understand the logic of ordering of the series.

par Gustavo P F d X

15 janv. 2017

Wonderful course for those who are keen on expand their knowledge n R skills.

par Bruno K

17 févr. 2016

Great course! The course content is very good and the length is appropriated.

par Marco M

9 oct. 2020

Really good course! It could be even better with more labs in the beginning.

par Scott D

30 déc. 2018

This course is great. The tactical skills in R you really need on the job.

par Jessica R

3 avr. 2018

Very useful course on how to prepare data so it can more easily be analyzed.