The course is so hard for whom who don't have a Statistical background. The number of submissions are too numerous for professionnals who have only the weekend to do tem all. The course's projects must be reviewed.

The course was great. It really pushed students to learn R with real world assignments, and the lectures made sense. The only draw back was the level of the assignments were greater than the lectures and lessons.

I'm really learning R with this course but it's a pity in the last quiz of week 4 the code asked to type in in the last 3 questions didn't work. However it was easy to work out what the question was trying to ask.

A little difficult and fast but you do get to learn a lot. The plus point is that Coursera provides ample of time to get through with this course which really worked for me since and I'm working and studying both.

A useful course dedicated to R programming. It's bit tough for those who have little programming experience, so including more practice sections would help a lot to bridge the gaps between assignments and theory!

Good intro into R and the respective toolchain. Maybe a bit steep for newbies to programming. Also some excursion into the math might have been nice. For non-english natives the terms are sometimes not known yet.

This R course is quite overwhelming for those who start learning R. R course from Duke university will walk through from step by step. From that, this would be wonderful to learn R from John Hopkins university.

I would like to have more practical exercises aimed at easily fulfilling the final assignment project, since sometimes I have found myself with problems to know which functions to use in order to properly code.

It was very interesting and helpful. But, while the lessons where meant for beginners (such as myself), the programming assignments where for people with previous programming experience and not people like me.

I want to give this course a '5' but I believe it could be more in-depth and could introduce the idea of making packages as a "fifth week" topic. Otherwise, great! I feel well grounded in R and ready for more!

The course was quite useful. The assignments were challenging. The fee, however, could be charged for individual courses rather than for the entire specialization as it would give more freedom to the learners.

Very good introduction to R Programming. It would be especially good if at the end of the course there were some model answers, though I appreciate the problem of answers transgressing into the public domain!

Good course to start working with data analysis with R.

In my opinion, Peer assignments doe not work properly for this type of course.

I got a Zero from a peer who definitely hadn't any idea what she was doing.

An order of magnitude more difficult than the intro course. Unexpectedly tricky at times ( esp. if you're primarily versed in programming & not stats ) but more all the more worth it for the difficulty spike.

Great content,but for a beginner like me,I think the course should have more and more code assignment starting from short and easy to the final assessment.On solving the coding assessment,I felt intimidated.

He aprendido bastante sobre un tema que era desconocido para mi, no ha sido fácil precisamente por lo anterior; sin embargo, las tareas de Programación no son tan claras en las especificaciones que se dan.

I completed this course with blood and sweat. Programming Assignments will make you doubt yourself. Basic knowledge of programming is recommended. Although course is heavy, its quite informational as well.

O curso é interessante, principalmente os exercícios. Porém, o que é dado no curso é muito simples perto da dificuldade das provas. É necessário MUITO estudo extra para que seja possível terminar o curso.

A decent course overall with a VERY steep learning curve (even more so for those who don't touch R on a regular and intense basis), but if you are looking to expand your R skills, this course is for you.

Class is very interesting and eye-opening. I have to agree that it was very difficult for me to get all the working programming done correctly. I had a hard and frustrating time. I enjoyed it, thought.

Great course, very well structured. Just one thing: for an absolute newbie in programming, it is extremely challenging. Some more guidance, practical exercises, step-by-step explanation would be great.

Get ready to use stack overflow and google a lot. Videos are more technical but give you a good oversight of what R functions r like. Assignments were sufficiently challenging as a beginner programmer.

Found lectures to be only somewhat helpful. More engaging production as opposed to just voice over ppt would be much better. Learning tools could also be improved to take advantage of technology.

Great course really helpful. But only 4 stars, because I wasn't really prepared for the 2nd Assignment (Lexical Scoping), based on the lectures, and the cache assignment operator wasn't well explained.

It was a great course with an excellent teacher (Prof.Peng) who teaches all of the contents with extra details. However, I think it would have been better to bring more examples during teaching time.