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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

4.6
7,663 个评分
1,242 条评论

课程概述

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....

热门审阅

HS
May 2, 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.

BE
Oct 25, 2016

This course is really a challenging and compulsory for any one who wants to be a data scientist or working in any sort of data. It teaches you how to make very palatable data-set fro ma messy data.

筛选依据:

951 - 获取和整理数据 的 975 个评论(共 1,201 个)

创建者 Yunfan T

Jul 28, 2017

the course lecture is not enough for assignment

创建者 Marina V V

Dec 20, 2018

More swirl exercises! They are really helpful

创建者 Manny R

Aug 10, 2017

Time consuming and Challenging but very good.

创建者 Patrick B

Nov 19, 2019

Challenging assignment. Interesting material

创建者 Gustavo T P

Sep 26, 2018

Good course, but se subject, not so mutch...

创建者 Alex s

Dec 28, 2017

The last project instructions were unclear.

创建者 Mehul P

Sep 10, 2017

Nice explanation on cleaning data activity.

创建者 Niranjan

May 22, 2017

Great course materials!! Great effort!! :-)

创建者 Marcos A V

May 15, 2017

I've learned much about reading data in R!

创建者 Daren T

Feb 8, 2016

was tougher than expected. i learnt a lot!

创建者 Chong C F

Sep 7, 2016

Well pack, but could have more practice.

创建者 Andrew K

Jun 9, 2019

The class could have better uniformity.

创建者 Guillaume H

Dec 2, 2016

Useful technics to make things workable

创建者 Tharindra P

Apr 15, 2020

Great content and hands on experience.

创建者 Ada

Nov 14, 2016

Well done. Thanks for a good course.

创建者 Lluis G

Nov 8, 2016

Nice set of techniques and methods!

创建者 Jehan H

Jan 11, 2020

The course has useful information.

创建者 John B

Oct 10, 2020

Guidance and instruction is good.

创建者 Rajib K

Feb 26, 2017

need to be crisped, over all good

创建者 Paras B

Apr 7, 2018

Great course for the beginners!!

创建者 Shahrokh N

Feb 10, 2018

Nice course and worth taking it.

创建者 Hakan S

Oct 24, 2020

One of the best of Data Science

创建者 Joseph L

Sep 15, 2020

Videos weren't detailed enough.

创建者 Laurent r

May 16, 2019

Good courses, I learned a lot!

创建者 Amanyiraho R

Jan 13, 2020

Best data cleaning technique.