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学生对 约翰霍普金斯大学 提供的 获取和整理数据 的评价和反馈

7,153 个评分
1,135 条评论


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....



May 03, 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.


Jun 08, 2020

A very useful course. The audio quality of some lectures (especially those by the main instructor) was not good. This course completes the sister course of R programming and they work together.


301 - 获取和整理数据 的 325 个评论(共 1,099 个)

创建者 20e

Nov 16, 2017

learning a lot! And my post in the forum got helpful reply very soon!

创建者 Ajay S

Oct 17, 2017

Great course to get started on a career track to be a data scientist.

创建者 Atman B

Apr 01, 2019

This course is one important step towards becoming a Data Scientist.

创建者 Ji H W

Jul 31, 2018

Great lecture and help understanding concepts throughout the lecture

创建者 Juan C L T

Oct 13, 2017

great course, very useful and insightful; challenging final project.

创建者 Dhrubajyoti M

May 16, 2017

Course material is good, assignment is better, mentors are the best!

创建者 Осипов К Ю

Jan 22, 2020

Perfect practical course! I got a lot of good practices and skills!

创建者 Bojan B

Oct 14, 2018

Great course with great materials. Easy to understand and to learn.

创建者 antonio q

Dec 19, 2017

very clear, many examples and good exercise, assignments

thank you

创建者 Emily K

Nov 09, 2017

Should be before the 'R Programming' course - eases you in nicely.

创建者 Jesus L S

Oct 24, 2016

a must have course before applying any math model to our data! :-)

创建者 Christophe K

Feb 11, 2020

Very good course and first real challenge in this specialization.

创建者 Wellintton P

Mar 12, 2018

great class for anyone learning the R language and data analytics

创建者 Himanshu S

Dec 28, 2017

Really good for folks, who wants to learn data manipulations in R

创建者 Channaveer P

Jul 24, 2017

Good one.... teaches you good skills to handle data and stress :)

创建者 Shuo C

Feb 21, 2018

This whole specialization is very informative! Highly recommend!

创建者 María A D S C

Apr 09, 2019

Muy interesante, bastante información y todo muy bien explicado

创建者 Gaalle A A P M P

Jan 23, 2018

Thank you very much for letting me do this course. Learned alot

创建者 duoruishi

Oct 29, 2017

It's a useful course but the final assignment is real hard hah.

创建者 Noah B

Apr 27, 2016

Solid fundamentals gained from this course on data manipulation

创建者 Denise O

Mar 16, 2016

Great use of R. It really helped solidify what I learned there.

创建者 Ellen B

Jul 02, 2018

Very nice course, and clear how to do it. I like it very much!

创建者 Sanjay L

May 16, 2018

Good Course. It gives an idea on how to prepare tidy data set.

创建者 Shashank S N K

Jan 31, 2018

It is great to know how the cleaning process is performed in R

创建者 Michele F F

Jun 27, 2019

The best course I have already done about data preprocessing!