Oct 26, 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.
Feb 02, 2016
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 Ayas S•
Nov 08, 2018
This course was very intense and not easy but over all, after doing all the work! Oh man I feel I have way more confidence in my R skills and Data understanding.
von Hatem K•
Dec 05, 2016
Excellent course. You will learn about concepts of 'clean' or tidy data and apply it in R. One of the most important, yet often ignored, aspects of data science.
von Kwun H N•
Dec 25, 2017
It is an excellent exercise to work on data cleaning and pre-processing. Also give me the great chance to read through the paper by Hadley Wickham on Tidy Data.
von Y S K•
Apr 23, 2017
This course gives an excellent introduction to the various data collection and tidying processes using R. This course is a must for any aspiring data scientist.
von Jihad R•
Nov 04, 2016
Great course! Very well structured and complete in the knowledge it brings both on the R language itself and in the concept of data clean up and transformation.
von Stefan L•
Mar 14, 2016
Interesting course with a lot of time intensive quizes. It, however, opened my eyes on how to effectively work towards clean data.
Thanks for the great courses!
von Yash G•
Aug 07, 2018
It was really an enriching course. I learnt a lot about the raw data formats and tools and techniques to get the best out of that raw data. Highly recommended
Apr 04, 2016
Very good course. By taking it you have the opportunity to build experience with R and get used with the main codes needed to perform a data cleaning process.
von Bhargava B•
Mar 29, 2018
This is a major basic skill to be acquired. The course does great job at introducing various methods and makes us practice with the quizzes and assignments.
Aug 26, 2018
its the best course for the data science students and it will help all the student who are going to join or who want to start their career in data science.
von Rizwan M•
Jul 06, 2018
good. however, volume of the video is very low, not audible without external speakers on some PCs. request to improvise. spoken language is also very fast.
von Michael M•
Aug 28, 2017
Another great course! I'm really glad there was so much support to help me get started on the class posts. PS, I think I'm in love with the ddply function.
von Mohammed A O•
Jan 30, 2017
This is a challenging but very intersting course, I had to learn lot from the course and from the colleagues through the pairs work examination.
von Araks S•
Jun 20, 2017
I definitely loved this course.
My advice to anyone taking this course is to spend fare amount of time on assignments as it is the part when you learn.
von Hernan D S P•
Mar 06, 2018
This is a very useful course on How to use R to prepare the data you need to analyze! highly recommended for both beginner and advanced data analysts!
von Guillaume S•
Mar 24, 2018
Very interesting but a bit tough and time consuming with a lot of work on your own... but that's probably how you develop real life hacking behavior!
von Han C•
Mar 27, 2017
Assignment difficulty is good and practical, however, I took quite a while to understand the raw data structure and the purpose of the assignment.
von Cody W•
Feb 28, 2017
Great introduction to scraping information from internet sources and turning complicated data into something that can be visualized and processed.
von santiago R•
Jul 26, 2017
Very good course. Way more exigent than expected but I have the feeling that I got very good grounds, insights and also skills in R proggramming
von rahul g•
Dec 22, 2019
A very interesting and unique course, for the kind of things it helps to learn are often ignored. It brings the breadth of the theme forward.
von Jack D•
Jan 08, 2018
This was my first course with serious data gathering and manipulation. I found some of week 3 challenging, but overall enjoyed the learning.
von Habiballah S•
Jul 11, 2017
Very informative and useful! You learn a lot specially through the (last) assignment(s)! Very happy with the course, materials and subjects.
von Adi T•
Jan 16, 2017
I feel that getting and cleaning data course is highly important to know since this is where 80% of the work in data science is being done.
von Alejandro B G•
Feb 12, 2016
WHen i took this course i though i will never apply the knwoledge in here... i was wrong, the basis of a credibly analisis is here. Thanks!
von Glenn W•
Mar 04, 2019
Very good course. Dr. Peng did a nice job of presenting the material. The projects and quizzes were challenging as well as educational.