2 мая 2020 г.
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.
25 окт. 2016 г.
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.
автор: Shashank M•
23 июля 2017 г.
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.
автор: Eduardo S B•
5 окт. 2019 г.
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.
автор: le M N•
23 июня 2020 г.
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
автор: Jason Y•
2 авг. 2017 г.
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.
автор: Patti M•
4 янв. 2017 г.
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.
автор: Sheila B•
7 мая 2018 г.
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.
автор: James K•
11 мая 2020 г.
Out of date material.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.
автор: Joseph S•
14 мая 2020 г.
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!
автор: Albert B•
14 авг. 2016 г.
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!!
автор: Seyed A T•
19 июля 2016 г.
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.
автор: Sergio C d F•
23 авг. 2016 г.
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.
автор: Cintia K•
9 мар. 2021 г.
Unfortunately the course's lectures are quite outdated, so you won't pass week 1 without all the research done by yourself.
автор: Ruwaa I•
18 авг. 2020 г.
I learned "ask Google" and dplyr, nothing more. Not as satisfied as with the other courses in the specialization.
автор: Adrea G•
28 июля 2022 г.
I started this course but I don't feel that the material covered reflects the material tested in the quiz.
автор: Gianluca M•
19 сент. 2016 г.
The only interesting part was dplyr. The rest was too confusing, with lots of lists and no explanations.
автор: Adam M•
17 янв. 2020 г.
The information in the lectures is very stale, which makes it extremely frustrating to learn from.
автор: DESIREE P•
10 мар. 2021 г.
Messier than the 2 previous courses. Lacks explanations for codebook in the peer-graded exam.
автор: Sudarshan P•
5 дек. 2017 г.
The course material needs update. There are code snippets that do not work.
автор: Aditya D•
18 сент. 2017 г.
This course could have been better. It was all textual and it got boring.
автор: James C•
29 мая 2017 г.
Final assignment is not well detailed, and may cause confusion.
автор: Guy P•
3 мар. 2016 г.
This course lacks projects to implement the skills we learn.
автор: Lee D•
18 мая 2016 г.
The course was a bit mixed in terms of its quality.
автор: Colin H•
21 окт. 2020 г.
Guidance for assessments could be a lot better
автор: Adam K•
25 авг. 2019 г.
Very poor instructions for assignments.
автор: Rafee S•
25 февр. 2019 г.
waste of time for software engineers