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.
Easy, mostly instructive Course. The Assignments and quizzes are quite good, and illustrates the lessons very well.\n\nSee the videos for general presentation, but use the energy on the excersizes.
von Shashank M•
This is a very crucial part of the data science specialisation and I feel more hands-on exercises and quizzes should have been there. Small practice quizzes for testing incremental learning within a week should be there.
von Eduardo S B•
In my opinion the structure of the course is not the best. I mainly dislike the fact that some libraries, packages, etc. (e.g. MySQL) are not trivial to install.
Still I learnt quite a lot, so I wouldn't say it's bad.
von le M N•
the instructor of this course, unlike the other 1, is quite unclear about what needed to be done. a lots of the packages of the course are not up to date.
more quiz and exercise would be highly beneficial
von Jason Y•
Mediocre presentation of tidy data, which is probably the most critical topic. Otherwise, its mostly just walking through what commands to use in R to load in various file formats.
von Patti M•
This class needs more content, more explanation. It is clearly a very important aspect of Data Science, but the assignments were more complex than the given course content.
von Sheila B•
I learned a lot but my usually happy & grateful attitude was sorely challenged by the fact that so many facts in the videos and obvious course material was, well, wrong.
von James K•
Out of date material. Many links broken. Some of the functions taught are sunset. Week 2 was too surface level to do anything useful. Weeks 3 and 4 better than week 2.
von Joseph S•
This course has a very interesting subject and a concise syllabus, but is very poorly prepared. I hope coursera will pass on the message to Johns Hopkins University!
von Albert B•
Too difficult practical exercises with the theorical background given. I know that hackers skill should be used but it is too much assumption in the projects!!
von Seyed A T•
It is somehow just an extension on R Programming course, with many unnecessary details that will be forgotten in a few days after the course.
von Sergio C d F•
The video is simple and good.
But the final project and some test are too hard based on material presented.
Also staff's support are not good.
von Ruwaa I M•
I learned "ask Google" and dplyr, nothing more. Not as satisfied as with the other courses in the specialization.
von Gianluca M•
The only interesting part was dplyr. The rest was too confusing, with lots of lists and no explanations.
von Adam M•
The information in the lectures is very stale, which makes it extremely frustrating to learn from.
von Sudarshan P•
The course material needs update. There are code snippets that do not work.
von Aditya D•
This course could have been better. It was all textual and it got boring.
von James C•
Final assignment is not well detailed, and may cause confusion.
von Guy P•
This course lacks projects to implement the skills we learn.
von laurent h•
Content is fundamental but teaching was under expectations
von Lee D•
The course was a bit mixed in terms of its quality.
von Colin H•
Guidance for assessments could be a lot better
von Adam K•
Very poor instructions for assignments.
von Rafee S•
waste of time for software engineers
von Maximilian P•
Too many things in one place
von Sergio B S•
Worst class in this series.