Chevron Left
Voltar para Obtenção e Limpeza de Dados

Comentários e feedback de alunos de Obtenção e Limpeza de Dados da instituição Universidade Johns Hopkins

7,939 classificações

Sobre o curso

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....

Melhores avaliações


2 de mai de 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 de fev de 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.

Filtrar por:

326 — 350 de 1,278 Avaliações para o Obtenção e Limpeza de Dados

por 吴昊

3 de mar de 2018

Very helpful source. Introduce the basic and important concept of tidy data.

por 杜冈桃

7 de set de 2017

Coursera is very practical and I am ready to continue to study more courses.

por Catharine

16 de mar de 2017

Very helpful and practical course to learn about data sourcing and cleaning.

por Juan C P A

28 de mar de 2016

Recommended for all who want to manage their data and not be handled by them

por Jeff D

10 de out de 2020

This a great course especially for a beginner like me. Thank you very much.

por Eswara K

4 de jun de 2020

Great course. Only nitpick is that the volume of data to work with is huge.

por Mevluet P

26 de mai de 2020

It is a very good course. It is my reference page and course about using R.

por Michael D

22 de mai de 2020

Provides great foundational knowledge of building usable data objects in R.

por Jesson P

30 de set de 2018

This course taught me the importance of tidying data suitable for analysis.

por Leonard P

30 de nov de 2020

Exceptional course with a steep learning curve, But it's totally worth it.

por Mahmoud E

1 de out de 2018

This course gives a great insight on how capable and versatile R language.

por Jamie M

6 de jul de 2018

Excellent once again. I'm running out of superlatives. Great job Coursera.


10 de set de 2017

Very good for anyone wanting to get into the field of Data Science using R

por harshdeep k

29 de ago de 2016

Learning how to create a tidy Data set was one of the perks in this course

por Arturo P

10 de dez de 2020

Excellent course, really good for managing messy data. Fully recommended!

por Jean P L

26 de jan de 2016

It's awesome. Very difficult, challenging, and lots of stuff to be learnt

por Filip Z

11 de set de 2020

Great course. I learned what i wanted to learn in a very convenient way.

por 陈颐欢

23 de abr de 2018

Very useful class for someone like me who be a beginner of data science

por Keith L

2 de jun de 2017

I learned a lot from this course and can see its practical applications.

por Diana S

11 de fev de 2016

Thank you son much!!!!

I really like the course.

It help me in my job =)

por Bushra W

3 de mai de 2019

Coursera gives me the flexibility I need to take courses on my own time

por Hathairat W

9 de fev de 2019

A very Important course for working with R and data science in general.

por Omkar P

10 de jun de 2016

Great module with hands on practicals !!!!! help to build confidence...

por 王婷婷

21 de mar de 2016

good, i need more pratice by myself and i haven't read the book yet :-)

por David E C G

16 de set de 2020

Great, the final assignment is challenging and I learn a lot with this