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

7,929 ratings
1,311 reviews

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


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.


Feb 1, 2016

Easy, mostly instructive Course. The Assignments and quizzes are quite good, and illustrates the lessons very well.\n\nSee the videos for general presentation, but use the energy on the excersizes.

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1026 - 1050 of 1,274 Reviews for Getting and Cleaning Data

By Fernando M

Sep 4, 2017

Really important tools!!

By César A C

Jun 5, 2017

Very interesting course.

By Chirag R

Jun 28, 2019

Good course. Thank you!

By Sisi H

Sep 9, 2019

Overall a solid class

By Seunghak J

Jun 4, 2017

Very practical course

By Raghu K V

Jan 13, 2016

Good course this...

By Amit S

Nov 1, 2019

Very good content

By Federico J D F

Mar 24, 2021

very challenging

By Fernando S

Mar 31, 2016

Excellent course

By Rohit K S

Sep 20, 2020

Nice Course!!

By Lau I L

Aug 17, 2018

A lot of work

By Fabio P

Oct 14, 2017

A good course

By Sabawoon S

Jun 28, 2017

Very helpful.

By Venkata N K T

May 10, 2016

Very valuable

By Ted S

Jan 31, 2016

Great course.

By Harsha G

Mar 3, 2016

very helpful

By Giorgos A

May 26, 2019

good course

By M C

Jan 22, 2021

Pretty OK

By Greg B G

Oct 3, 2016

very good

By Khobindra N C

May 18, 2016


By Luiz C

Sep 16, 2017


By Nithya M

Jun 23, 2017


By Shreya S

Mar 20, 2017


By Veena M

Feb 21, 2016


By Chuang M

Feb 6, 2016