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学生对 Johns Hopkins University 提供的 Getting and Cleaning Data 的评价和反馈

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8,070 个评分

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.

BD

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：

501 - Getting and Cleaning Data 的 525 个评论（共 1,313 个）

创建者 Hua S

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Jun 13, 2017

I've learned so much from this course!

创建者 Karel Š

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Feb 3, 2017

Nice and hard course, which is good :)

创建者 Emanuele M

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Feb 8, 2016

Course is really well done and useful.

创建者 Mohamed A

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Jul 28, 2017

Rally well course i sugeste it much .

创建者 Bauyrjan J

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Oct 31, 2016

One of the best courses of the track!

创建者 Сергей Ш

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Jul 5, 2016

It was kind of exhausting, but great.

创建者 Juan P S

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Jan 12, 2016

Best instructors, best learning . . .

创建者 Jerome C

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Jul 6, 2020

Roger is great. That's all I can say

创建者 Silas S

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Nov 14, 2018

Fantastic course. Highly recommended

创建者 Merin R

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Jul 20, 2017

Well written, and doesnt waste time.

创建者 Jordi A C

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Dec 25, 2016

Very interesting. I've learnt a lot.

创建者 6RiL

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Nov 7, 2016

Amazing course!

Thanks for everthing.

创建者 Daniel R

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Feb 19, 2016

Great! And the project is wonderful!

创建者 Faiz A

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Jan 9, 2021

very good and understandable course

创建者 Ritu A H

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Jun 12, 2020

superb course , learn a lot from it

创建者 Judith W

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May 13, 2020

A challenging, but rewarding course

创建者 Diego B

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Apr 10, 2019

Really constructive and nice course

创建者 Greg V

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Mar 6, 2019

A very practical and useful course!

创建者 Mehmet G I

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May 7, 2018

It was challanging and informative.

创建者 Subramanya N

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Dec 12, 2017

Nice course. Learnt a lot of tricks

创建者 Germán A F G

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Dec 6, 2017

very difficult, but I learned a lot

创建者 Chinmoy D

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Sep 9, 2017

nice and quite informative course !

创建者 Helvio M

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Apr 14, 2017

Good course, worse the time I spent

创建者 Bharadwaj D

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Jan 4, 2017

Absolutely Necessary course this!!!

创建者 Gabriel O G

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Feb 22, 2021

Im 100% satisfied with the course.