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

4.5
stars
8,047 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.

BE

Oct 25, 2016

This course is really a challenging and compulsory for any one who wants to be a data scientist or working in any sort of data. It teaches you how to make very palatable data-set fro ma messy data.

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376 - 400 of 1,306 Reviews for Getting and Cleaning Data

By Christophe K

Feb 10, 2020

Very good course and first real challenge in this specialization.

By Wellintton P

Mar 12, 2018

great class for anyone learning the R language and data analytics

By Himanshu S

Dec 28, 2017

Really good for folks, who wants to learn data manipulations in R

By Channaveer P

Jul 23, 2017

Good one.... teaches you good skills to handle data and stress :)

By Shuo C

Feb 21, 2018

This whole specialization is very informative! Highly recommend!

By María A D S C

Apr 9, 2019

Muy interesante, bastante información y todo muy bien explicado

By Ayesha P

Jan 22, 2018

Thank you very much for letting me do this course. Learned alot

By duoruishi

Oct 29, 2017

It's a useful course but the final assignment is real hard hah.

By Noah B

Apr 26, 2016

Solid fundamentals gained from this course on data manipulation

By Denise O

Mar 16, 2016

Great use of R. It really helped solidify what I learned there.

By Ellen B

Jul 2, 2018

Very nice course, and clear how to do it. I like it very much!

By Sanjay L

May 16, 2018

Good Course. It gives an idea on how to prepare tidy data set.

By Shashank S N K

Jan 31, 2018

It is great to know how the cleaning process is performed in R

By Frank O

Jun 24, 2021

Extremely well designed. The knowledge is very well imparted.

By Michele F

Jun 27, 2019

The best course I have already done about data preprocessing!

By Vinicio D S

Nov 20, 2017

Great course for getting to know different places to get data

By Shri P S

Aug 3, 2017

Very nice and highly recommended training or data scientists.

By Giridhar C

May 15, 2017

most important course for simple cleaning pls dont omit swirl

By Sam Z

Dec 12, 2016

This is a great course! I like it. It really helped me a lot.

By Rafael H G

Mar 21, 2016

Good course to learn how to use R to getting and clening data

By Juan A J R

May 20, 2017

great starting in the pain of getting data ready to analysis

By Garlapati A

May 21, 2020

I learnt so much through this.Its a good platform to learn.

By Abdifitah A S

May 20, 2020

The course was very good basic of how to analyse data in R.

By David S

Feb 4, 2019

Better than R Programming. Still very hard, but worthwhile.

By Rishabh J

Aug 22, 2017

The course project was a good exposure to untidy data sets.