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

4.5
stars
8,071 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

CW

Aug 7, 2020

I think that the level of difficulty of the exercises and final assignment does not match with the depth of the lectures; without a textbook, I feel lost, don't have a reference, and have to guess.

RR

Jul 10, 2017

I found the last project insufficiently explained. I was struggling in understanding what the task is. A bit more clear task description (as in Course 2) would be really appreciated.

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551 - 575 of 1,314 Reviews for Getting and Cleaning Data

By Alessandro M

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Jul 22, 2019

Very good and well done course.

By Bora A

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Jul 31, 2018

Thanks for the excellent course

By Billy J

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Feb 6, 2016

Challenging, but in a good way!

By Mohd I S

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Sep 23, 2018

Great project course challenge

By Jesús A

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Feb 13, 2018

Challenging course! I loved it

By Antoine d L

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Nov 16, 2017

Nice and challenging exercices

By Umer A

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Aug 9, 2017

A very well structured course.

By jirong h

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Sep 19, 2016

Useful to get the basics right

By Lucyna K

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Dec 20, 2020

Fantastic - highly recommend!

By Basel T

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Jun 30, 2020

well structured and fantastic

By Shashwat K

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Jul 27, 2020

Great concepts and teaching.

By Vibhutesh K S

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Nov 18, 2018

It was really a good course.

By 卢君

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Apr 12, 2018

A little bit hard for newbie

By Javier A

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Mar 16, 2017

Very useful. Well structured

By Avtandyl R

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Nov 28, 2016

Cool course,very useful info

By Sudhir B

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Jul 8, 2016

The examples used were good.

By Shayan A K

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Apr 23, 2016

outstanding!!. learnt a lot.

By Umar M

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Jul 10, 2025

Great Introductory Course!!

By Benedikt K

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Jan 20, 2022

tough, yet so informative!

By Farah N

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Jan 7, 2019

I liked the course project!

By Reek M

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Jan 22, 2018

Toghest assignment till now

By Mauricio C

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Dec 31, 2017

Tough one! I learned a lot!

By Marco L

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Jul 13, 2016

Excelente, muy recomendable

By Khem W

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Jan 21, 2023

really help up the thoughs