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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 4, 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

Nov 1, 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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1051 - 1075 of 1,314 Reviews for Getting and Cleaning Data

By Laurent R

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May 16, 2019

Good courses, I learned a lot!

By Amanyiraho R

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Jan 13, 2020

Best data cleaning technique.

By Nicholas C

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May 30, 2019

Too much outdated content.

By Fernando M

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Sep 4, 2017

Really important tools!!

By César A C

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Jun 5, 2017

Very interesting course.

By Chirag R

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Jun 28, 2019

Good course. Thank you!

By Sisi H

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Sep 10, 2019

Overall a solid class

By Seunghak J

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Jun 5, 2017

Very practical course

By Raghu K V

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Jan 14, 2016

Good course this...

By Amit S

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Nov 1, 2019

Very good content

By Federico J D F

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Mar 24, 2021

very challenging

By Fernando S

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Apr 1, 2016

Excellent course

By Rohit K S

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Sep 20, 2020

Nice Course!!

By laulaustsen

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Aug 17, 2018

A lot of work

By Fabio P

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Oct 14, 2017

A good course

By Sabawoon S

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Jun 29, 2017

Very helpful.

By Venkata N K T

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May 11, 2016

Very valuable

By Ted S

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Feb 1, 2016

Great course.

By Harsha G

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Mar 3, 2016

very helpful

By Giorgos A

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May 27, 2019

good course

By M C

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Jan 23, 2021

Pretty OK

By Greg B G

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Oct 4, 2016

very good

By Khobindra N C

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May 18, 2016

Excellent

By Luiz C

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Sep 17, 2017

Useful

By Nithya M

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Jun 23, 2017

Great!