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

4.5
stars
8,062 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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1026 - 1050 of 1,311 Reviews for Getting and Cleaning Data

By Yunfan T

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Jul 28, 2017

the course lecture is not enough for assignment

By Marina V V m

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Dec 20, 2018

More swirl exercises! They are really helpful

By Manny R

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Aug 10, 2017

Time consuming and Challenging but very good.

By Patrick B

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Nov 19, 2019

Challenging assignment. Interesting material

By Gustavo P

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Sep 26, 2018

Good course, but se subject, not so mutch...

By Alex s

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Dec 28, 2017

The last project instructions were unclear.

By Mehul P

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Sep 10, 2017

Nice explanation on cleaning data activity.

By Niranjan A

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May 22, 2017

Great course materials!! Great effort!! :-)

By Marcos A V

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May 15, 2017

I've learned much about reading data in R!

By Daren T

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Feb 8, 2016

was tougher than expected. i learnt a lot!

By Chong C F

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Sep 7, 2016

Well pack, but could have more practice.

By Andrew K

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Jun 9, 2019

The class could have better uniformity.

By Guillaume H

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Dec 2, 2016

Useful technics to make things workable

By Tharindra P

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Apr 15, 2020

Great content and hands on experience.

By Lucrecia P

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Apr 9, 2023

A little more examples would be nice.

By Ada

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Nov 14, 2016

Well done. Thanks for a good course.

By Lluís G

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Nov 8, 2016

Nice set of techniques and methods!

By Jehan H

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Jan 11, 2020

The course has useful information.

By John B

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Oct 10, 2020

Guidance and instruction is good.

By Rajib K

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Feb 26, 2017

need to be crisped, over all good

By Paras B

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Apr 7, 2018

Great course for the beginners!!

By Shahrokh N

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Feb 10, 2018

Nice course and worth taking it.

By Hakan S

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Oct 24, 2020

One of the best of Data Science

By Joseph L

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Sep 15, 2020

Videos weren't detailed enough.

By Laurent R

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May 16, 2019

Good courses, I learned a lot!