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

4.5
stars
8,063 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

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.

DH

Feb 1, 2016

Easy, mostly instructive Course. The Assignments and quizzes are quite good, and illustrates the lessons very well.

See the videos for general presentation, but use the energy on the excersizes.

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501 - 525 of 1,311 Reviews for Getting and Cleaning Data

By Hua S

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Jun 13, 2017

I've learned so much from this course!

By Karel Š

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Feb 3, 2017

Nice and hard course, which is good :)

By Emanuele M

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Feb 8, 2016

Course is really well done and useful.

By Mohamed A

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Jul 28, 2017

Rally well course i sugeste it much .

By Bauyrjan J

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Oct 31, 2016

One of the best courses of the track!

By Сергей Ш

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Jul 5, 2016

It was kind of exhausting, but great.

By Juan P S

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Jan 12, 2016

Best instructors, best learning . . .

By Jerome C

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Jul 6, 2020

Roger is great. That's all I can say

By Silas S

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Nov 14, 2018

Fantastic course. Highly recommended

By Merin R

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Jul 20, 2017

Well written, and doesnt waste time.

By Jordi A C

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Dec 25, 2016

Very interesting. I've learnt a lot.

By 6RiL

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Nov 7, 2016

Amazing course!

Thanks for everthing.

By Daniel R

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Feb 19, 2016

Great! And the project is wonderful!

By Faiz A

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Jan 9, 2021

very good and understandable course

By Ritu A H

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Jun 13, 2020

superb course , learn a lot from it

By Judith W

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May 14, 2020

A challenging, but rewarding course

By Diego B

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Apr 10, 2019

Really constructive and nice course

By Greg V

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Mar 6, 2019

A very practical and useful course!

By bilibil

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May 7, 2018

It was challanging and informative.

By Subramanya N

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Dec 12, 2017

Nice course. Learnt a lot of tricks

By Germán A F G

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Dec 6, 2017

very difficult, but I learned a lot

By Chinmoy D

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Sep 9, 2017

nice and quite informative course !

By Helvio M

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Apr 14, 2017

Good course, worse the time I spent

By Bharadwaj D

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Jan 4, 2017

Absolutely Necessary course this!!!

By Gabriel O G

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Feb 22, 2021

Im 100% satisfied with the course.