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Learner Reviews & Feedback for Getting and Cleaning Data by Johns Hopkins University

4.5
stars
8,073 ratings

About the Course

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....

Top reviews

BP

Feb 3, 2018

The course is an excellent introduction to the dplyr package and string manipulation in r. I thought the assignment at the end of the course was a little vague and hard to understand

WC

Oct 31, 2016

This course is amazing! I have spent the majority of my time in R merely doing analytics. This course taught me the tools needed to go out and grab the data that I need for those analytics.

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751 - 775 of 1,314 Reviews for Getting and Cleaning Data

By Marcos A P C

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Jul 17, 2020

Excellent!

By Gustavo D S F

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Sep 26, 2019

excellent!

By Wentao H

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May 16, 2018

great job!

By Zito R

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Feb 27, 2018

Excellent!

By Yoselin A

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Nov 7, 2017

Excellent!

By Jorge P D S

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Oct 27, 2017

Excelente!

By Mikhail L

•

Aug 10, 2017

Nice work!

By 刘雨涵

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Jul 24, 2017

Very good!

By Fábio R C

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Jul 3, 2017

Muito bom!

By Snezana T

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Mar 22, 2017

Excellent!

By David K

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Jan 12, 2017

thank you!

By Alex

•

Oct 10, 2016

good intro

By David C

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Jun 29, 2016

Excellent.

By Jay S

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Jun 17, 2016

Excellent!

By Tan K T

•

Feb 29, 2016

Muito bom.

By Jaime C E B

•

Apr 15, 2022

muy bueno

By Dhanush V

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May 25, 2021

very good

By Adrian T

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Jul 5, 2020

Thank you

By NEELESH S

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Jun 21, 2020

Very good

By Dhirajkumar I S

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May 26, 2020

excellent

By Prasadreddy B

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Jan 6, 2020

very nice

By saurabh s

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Mar 11, 2018

very good

By Hein Z

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Sep 11, 2017

Excellent

By Seid A A

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Sep 3, 2017

its great

By Gerald T

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Jul 24, 2017

Tidy data