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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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901 - 925 of 1,306 Reviews for Getting and Cleaning Data

By Julien O

Aug 27, 2020

A bit challenging and requires the student to research the web themselves for some answers but the techniques learned there will come in handy in the future.

By Julien N

Jul 23, 2018

Like other course from JHU, I really appreciated this course pace and the fact that projects requiring more than just applying what is explained in the video

By Michel P N

Feb 20, 2017

I took this course a couple years back. It's much improved with lectures and exercises around specific functions to help with cleaning up data. Thank you!

By Michael C

Jan 10, 2017

A pretty good course on cleaning up and preparing tidy data. However, the material for a couple of weeks was quite brief and could have been more involved.

By Kyriaki R

Oct 10, 2022

The content was very helpful! The only problem was that there is an echo in all the videos, which made them a bit hard to follow even with head phones.

By Adler C

Jun 27, 2020

Great course. The only thing that needs improvement are the quizzes questions, as some were not updated and required me to consult the forums to solve.

By Connor G

Aug 5, 2017

Pretty good for the most part. I just found Week 2 to be a bit redundant in comparison to Week 1 and the Course Project instructions to be a bit vague.

By Saumya T

Nov 27, 2016

A lot of self learning is needed in this course. Be prepared to search for function documentations and stack exchange. Quite frustrating but worth it.

By smaudet

Jun 4, 2016

Decent course for learning how to navigate data sets in R. Not always obvious what the intent was, but it was good for learning how R operators think.

By Juan A D

Dec 4, 2020

Excelente curso. Los examenes practicos son un poco complicados, sobre todo para quienes aun son nuevos y estan desarrollando sus conocimientos en R

By Jun z

Feb 26, 2016

The course is excellent. Only problem is, for me, it is very hard to understand the meaning of the final assignment. The description is too simple.

By CLAUDIA R R

Feb 10, 2021

Excelente course!! The only problem I experienced was with the app, I couldn't check my grades correctly and that delayed my grade for a few days.

By Deleted A

Oct 18, 2016

clearly this course gives important lesson. but i think lots of materials are overlaped with previous course. final assignment is really helpful.

By Mandy S

May 18, 2017

The course begins to delve more into R Programming, which some is beyond my scope of knowledge. Maybe offer more Swirl before the assignment.

By Nicolaas K

Apr 4, 2017

Good intro course to learning about ways of getting data into R. I think the final assignment's instructions could be a bit clearer though.

By Arnav D

Jan 2, 2017

Could be more hands on! for example interactive tutorial where the instructor actually using the functions to demonstrate how things work.

By Jennifer L F W

Jan 2, 2021

Quite good for me who has just enter this field. Easy understanding lecture videos but the course project is hard for me as a beginner.

By Johnnery A

Sep 22, 2019

Los profesores debe explicar con mas detalle los temas. Pienso que hay una brecha importante entre los temas del curso y los proyectos

By Jose L S V

Mar 1, 2021

Muy buen curso, pero a veces batallas con las tareas. Toma más tiempo del que se supone debería. Aún así, lo recomiendo ampliamente.

By harish s

Dec 26, 2020

good course. swirl rules!. I think the unique part of this course is the assignments and course project, they are quite challenging.

By kipchumba B

Feb 28, 2021

It's a nice course. Prior to starting this course, I knew nothing about getting let alone cleaning data. thanks to JHU and coursera

By Ricardo M

Nov 8, 2017

Assigments description should have a clearer description. In some cases it's not absolutely clear what is intended to be delivered

By Karolina W

Jun 12, 2016

Good course, learned a lot especially through the quizzes and the course project, but slides/presentations could be more engaging.

By Hernan S

Apr 15, 2016

Fun and interesting. Won't remember all the ways to get and clean data, but it's good to review them so I know what's possible.