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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.

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251 — 275 de 1,278 Avaliações para o Obtenção e Limpeza de Dados

por Muhammet A

21 de abr de 2019

I wholeheartedly enjoyed this course. It goes from very simple, to pretty advanced stuff at the end.

por Keidzh S

12 de mar de 2018

This course is absolutely fantstic education. More practice tasks will make it better in my opinion.

por Quiniou C

16 de set de 2017

This course is very interesting, we are starting to work on how to transform dataset into tidy data.

por Rohit A

12 de jun de 2019

Nice course to understand the deep insight in understanding the concept of the data cleaning in R.

por Asif M A

18 de abr de 2016

A good start for data science course. It is very essential to cleanse data before start analyzing.

por Admet Z

7 de nov de 2017

It was a bit harder, than Course 2 but still I was able to finish it and want to learn even more.

por Sravan K

28 de mai de 2017

It's very nice course and material is very good. The quiz is very challenging. Thanks to coursera

por Sreedharrao R

6 de fev de 2016

Nitty gritty of organizing the data in to a form where it can be used for more complex analysis.

por Rosane H G

7 de set de 2020

Very good and hands-on course for those willing to work with database construction and analysis.

por juan p d

15 de mai de 2016

i apprecciate the learning by doing and the lot of support that the staff and classmates provide

por Manuel M M

9 de set de 2019

Very practical and useful. I really enjoyed doing the test and learning a lot of R programming

por Sérgio A V G P

6 de jun de 2016

Excelent course. It is a great oportunity to develop the aknowkedge in R and System analysis.

por Hector M

19 de mai de 2016

Great way to exercise and practice something that is often neglected in data science courses.

por Alfonso L

19 de mar de 2020

Need to take some time to learn. A lot of stuff in so short period of time but really worthy

por Hariharan D

13 de jul de 2017

Excellent course. Interesting to learn through this experiential hands-on pedagogy approach.

por Rodrigo C

11 de out de 2017

Se enseña el uso de herramientas muy útiles a la hora de transformar raw data en tidy data.

por Jhon A R G

3 de ago de 2020

Es un curso que no se hace pesado, ya que se explican las temáticas con mucha naturalidad.

por Thiago M

12 de ago de 2019

Course material and projects help a lot in learning and improving data analysis techniques

por José E T

5 de ago de 2017

Very good course. Taught at the correct depth. He added a lot of knowledge to my training.

por Eric F

6 de nov de 2016

Excellent cours pour la mise en œuvre de méthodes robustes sur la préparation des données.

por Gayathri N

7 de mai de 2020

Good course that helped to get the skill of reading and different ways to work with Data.

por Сетдеков К Р

27 de set de 2018

Helped a lot form my understanding of a good workflow for data collection and processing.

por Lee W

4 de out de 2017

Great course to introduce you to the various methods of loading and processing data in R.

por Ryan H

23 de set de 2017

I really enjoyed this course. The instructors were good and the assignment was enjoyable.

por Alessandro P

9 de fev de 2016

Great course!

I think that cleaning the data in the right way is the key of data science.