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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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8,075 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

RR

Jul 9, 2017

I found the last project insufficiently explained. I was struggling in understanding what the task is. A bit more clear task description (as in Course 2) would be really appreciated.

JS

May 4, 2016

Actually, very interesting and helpful class. The one area around more complex structures (API, XML) warrants more attention, since I assume those are more dominant access methods.

筛选依据：

751 - Getting and Cleaning Data 的 775 个评论（共 1,315 个）

创建者 Marcos A P C

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Jul 17, 2020

Excellent!

创建者 Gustavo D S F

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Sep 26, 2019

excellent!

创建者 Wentao H

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May 16, 2018

great job!

创建者 Zito R

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Feb 26, 2018

Excellent!

创建者 Yoselin A

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Nov 7, 2017

Excellent!

创建者 Jorge P D S

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Oct 27, 2017

Excelente!

创建者 Mikhail L

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Aug 10, 2017

Nice work!

创建者 刘雨涵

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Jul 23, 2017

Very good!

创建者 Fábio R C

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Jul 3, 2017

Muito bom!

创建者 Snezana T

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Mar 22, 2017

Excellent!

创建者 David K

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Jan 12, 2017

thank you!

创建者 Alex

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Oct 10, 2016

good intro

创建者 David C

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Jun 29, 2016

Excellent.

创建者 Jay S

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Jun 17, 2016

Excellent!

创建者 Tan K T

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Feb 29, 2016

Muito bom.

创建者 Jaime C E B

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Apr 15, 2022

muy bueno

创建者 Dhanush V

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May 25, 2021

very good

创建者 Adrian T

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Jul 5, 2020

Thank you

创建者 NEELESH S

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Jun 21, 2020

Very good

创建者 Dhirajkumar I S

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May 26, 2020

excellent

创建者 Prasadreddy B

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Jan 5, 2020

very nice

创建者 saurabh s

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Mar 11, 2018

very good

创建者 Hein Z

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Sep 11, 2017

Excellent

创建者 Seid A A

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Sep 3, 2017

its great

创建者 Gerald T

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Jul 24, 2017

Tidy data