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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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1276 - 1300 of 1,306 Reviews for Getting and Cleaning Data

By Pooia L

Aug 19, 2018

This was a mix of everything course, nothing was completely explained. It would have been a better idea to just pick a limited options and cover them well. The description of the final project was a puzzle and the objective behind it was completely vague. I wanted to quit in the middle, but I put time and that is why I finished it!!!

By Antti S

Oct 16, 2016

Lectures and other material just don't cover the information needed in the course project. Majority of the learning has to be done outside of this course, in order to pass the course project.

I cannot recommend this course anyone who is not deeply familiar with the topic already. The course project is truly frustrating!

By Shanmuga P

Jan 14, 2018

Expected more explanation with the teaching part, detailed lecture depicting live examples is needed to explain each and every module of the course. similar examples like Assignments can be taught by hard-coding them with RStudio

hoping that these things can change with the next courses which I'm enrolling

By Diogo M

Aug 6, 2018

MUito rápido o conteúdo e o fato do suporte ser somente o fórum deixa o curso vago, achei muito fraco os slides e o método de ensino.

Poderiam focar mais em exercícios e nos comandos mais difíceis, pois quando chega nos assignments fiquei perdido por não ter conseguido realizar da forma esperada.

By Michael O

Oct 29, 2016

Basically impossible to complete quizzes and course project using the provided course material. Poor correlation between instruction and testing. Makes one wonder: If I need to solicit others' guidance to complete your tests, why am I paying for your guidance in the first place?

By Borin S

Oct 24, 2022

The swirl package can't be loaded due to old dependencies, so do the course; using very old version of R.

The lectures are very hard to follow as the examples in videos removed from web. which was very disappointing.

By Jeffrey G

Jul 6, 2017

Why are people writing extensive blog posts contemplating the vague wording of the final assignment when you could just *fix the assignment*? Also, one of the worst explanations of regular expressions I've ever heard.

By Jan-Willem A

Mar 15, 2016

There are quite a few issues with the final assignment of the Getting and Cleaning Data course. I feel this assignments lacks quality in contents, suffers from a flawed process and lack of attention by the moderator.

By Esha S

Apr 11, 2023

This course needs an update to be helpful in any way to the people looking to learn from this course. I would recommend just skipping this course in the Data Science Specialization and getting this info elsewhere

By Minh V

Sep 7, 2020

The instructor did not devote his time to teaching. Slides were poorly prepared. Links are not working. Although many students have raised the issues, nothing has been done for years.

By Javier G

Mar 17, 2022

Awfull outdated material. The packages mentioned do not work with the current RStudio version. The presentation sheets are protected (all pictures) instead of extractable text.

By Arif V V

May 1, 2017

Doesn't worth the effort. You learn the most by searching online tools each time you encounter a problem while solving a quiz problem or following the steps the instructor did.

By sotiris k

Oct 16, 2020

almost all the videos from week 1 are outdated making it impossible to follow the course,i will propably drop it,this is something that should be addressed by coursera.

By Jayasree K

Jul 16, 2020

The course material was not of much help. Felt lost while doing the assignments. The instructor keeps forgetting that this is a beginners level course

By Brian M

Oct 21, 2021

This entire program is an atrocious waste of time and resources. Get a book on Learning R from your local library and you'll be better off.

By R.Sangeetha

Aug 4, 2020

I may not able to submit the peer graded assignment. please help me to solve this. My progress is pending because of this assignment

By Alexander T

Jul 20, 2017

all the practical things had to be learned by self learning instead of in the course. Peer graded assignment took for ever to pass

By Yashar A

May 5, 2016

The worst! I don't recommend you to take any course from this institute. It is just wasting time and money.

By Indraneel B

May 1, 2016

Description of assignment questions is not clear. The expected answer from the questions are confusing.

By Sreevalsan M

Jun 17, 2020

The peer grading looks weird. I got a comment on my original work "seemed to be not written by me".

By Tom

Jun 7, 2017

final project is terribly defined. Lecturers, Coursera, and Johns Hopkins should all be ashamed.

By Josh H

Oct 25, 2017

Very scattered and unfocused course. Sad to say that I learned very little from this one.

By abhishek s

Feb 25, 2016

This is just because of the unclarity of the final assignment.

By Ian H

Apr 12, 2018

Terrible! Go to Data Camp and save a bunch of money!!!!

By Ahmed H E

Aug 29, 2019

the learning way in this course was bad, to me