Sep 28, 2021
This is the practical course.There is some concepts and assignments like: pandas, data-frame, merge and time. The asg 3 and asg4 are difficult but I think that it's very useful and improve my ability.
May 9, 2020
The course had helped in understanding the concepts of NumPy and pandas. The assignments were so helpful to apply these concepts which provide an in-depth understanding of the Numpy as well as pandans
By Pascal B•
Jul 27, 2019
Generally, very good selection of content. The explanations are insufficient for passing the assignments tho, which means that most of the course work is self-study from the web. The buggy auto-grader sometime made the submission of the assignments quite a pain as one has to find a way to change the code in a way that still produces the right answer but doesn't blow up the auto-grader.
By Sarah A•
Mar 1, 2021
It started out great but the more difficult assignments like week3 and week4 could use better wording and better clarification on the expected submission answers. The problems could be more well defined based on expected answers. A lot more of my time was spent troubleshooting the errors of assignment submission than what was being asked to be solved in the assignment question.
By Zhechen T•
Sep 20, 2021
This course sucks, all the video sound like reading pandas documentation. And I have to google the related explanation all the time.
All assignments are pretty challenging. It is a great improvement for panda skills after passing these assignments. This is a Enriching-4-week course.
These stars all for the teaching assistant, they helped me a lot on the Forum.
By Minyi Y•
Nov 20, 2016
The content and assignments are certainly useful and relevant. However, the lectures are too short and do not help much with doing the assignment. As a beginner, I relied heavily on google and the discussion forum to get through the assignment. And I am not sure if i can actually tackle similar problems again without referring back to the pre-mentioned resources.
Sep 20, 2018
Interesting course covering the main introduction topics to Data Science, however there is a too large gap between the theoretical (videos, Jupiter notebook examples, ...) lessons provided and the knowledge required to perform the assignment. The time to do individual research to perform the assignment is tremendous. This is not an easy course at all.
By Jennifer W•
Sep 17, 2020
I didn't feel that the lecture material corresponded to the exercises. I spent all my time just looking at Stack Overflow. The exercises are also not clearly written, such that you spend time trying to adhere to solving for the solution as opposed to learning Python fundamentals.
By Sabbir A•
Aug 8, 2020
I learned things, yes. But I was here to try and learn what is already there in the books; I thought it would make me understand easily and in interesting ways. I was disappointed. There is no point in taking the course if it sends me back to the books. :(
By Fanyu W•
Nov 12, 2021
I have to say this course took me much more time than I expected, because I spent too much time on understanding the programming assignments. Assignment 4 is not friendly to me, because I didn't know about sports in USA.
By ANAND S•
Oct 30, 2020
This is a pretty tuff course and the explanations and teachings are not up to the mark while assignments are good. To complete the course you have to take the help of youtube and web to fully understand the concept.
By Claude P•
Jul 3, 2021
More concise coding tutorials and less "search on your own on the internet" needed. It is great to get to know the online community and the course needs more coding example directly relat to exams.
By Tom M•
Dec 29, 2018
A lot of self directed learning, bordering on excessive. Sometimes it takes some investigation to figure out why the autograder did not pass you. Overall, I felt I learned a lot, much on my own.
By Pamela T•
Feb 2, 2019
This is a great overview for python, but the materials/videos/slides are very elementary compared to the sophistication of the homework. Required many more hours than the estimates.
By Saadman S•
Sep 16, 2020
Statistical stuffs are really tough, it's hard to understand without any background also the assignment materials should be discussed more, they should be included in the course.
Dec 20, 2020
Recent changes to the course made it a lot worse! Longer, less concise videos, difficult to find course notes, fewer mid-video working problems, and quizzes are pointless.
By Bárbara C G•
Feb 2, 2021
The videos are ok. The assignments are extremelly centered in data cleansing. The debate in forums is very helpful, and the course staff answers regularly.
By Ryan V•
Feb 10, 2021
Interesting material, poor instruction and not enough practice for things to sink in. Have to basically teach yourself everything through google searches.
By Colleen K•
Sep 21, 2018
I learned a lot by doing assignments, but the course materials are not helpful. Stackflow and Python documents guide me much more than the course itself.
By Muhamad H•
Sep 26, 2020
During the course, the instructor was presenting with a background contains moving people which caused a big distraction to me.
By Sudharshan C•
Oct 28, 2020
The assignments can be better structured. I found it tough to navigate and perform operations
By Sai S•
Dec 23, 2020
Needs to be packaged in more interesting way..felt course contents and presentation vague
By Khairul A•
Aug 10, 2020
Too fast explanation
By Matteo S•
Nov 3, 2021
1. The lectures are a chore to sit through. Dry, slow, and unorganized. The lecture on pivot tables was not used in any assignment. So why have it?
2. Assignments. Ooof. Lets break this down.
a. Autograder is poor. Aside from the oddities that just break it sometimes, the hidden test feedback is lacking. If my answer is off at the 15th decimal point because my dataframe is 226 rows and not 227. I need another assert and feedback telling me that. Instead of a lesson on logic a lot of these problems became frustrating cases of github searching for other peoples passing code and then working backwards
b. Assignments felt rushed. Each assignment had poorly written questions that frequently popped up in the forums asking for clarification. The assignments themselves had odd jumps in difficulty and assumptions. Some would build upon the lectures but other times they would jump and assume that we would figure out the middle. Oftentimes we did, but imperfectly, and the assignments penalized us for that imperfection. For example, if question says clean the data and we do using one of a dozen different ways why are we penalize if we have 224 clean rows, and the answer requires 227. If that level of end accuracy is required, then we need more guidance to achieve exactly that.
3. Forums. Useless. Filled with garbage, and the useful ones are unstructured mess. For one, the autograders output is small grey typwriter text which is undecipherable and the TAs always wanted it posted. This lead to long chains of code blocks and one line responses. I also think the TAs emphasis on posting zero code is wrong. The entire web is built on Stack Overflow, so why not allow code snippets in the forum?
By Brian L•
Oct 3, 2020
TLDR - poor design of class makes for a bad experience and wasted time.
Longer - There is a disjunct between what is covered in the videos and what is tested in the assignments, and there are problems with the assignments (the autograder and the extremely dated pandas version supported) . The videos function as a partial reference guide, which is only very loosely what is tested in the assignments. If I didn't pay for the class, I would see value in the assignments themselves. Since I did pay for the class, I expect more value from the videos. For the 3rd and 4th weeks I proceeded more quickly by relying much more heavily on stack overflow and pandas documentation, to the point of sometimes ignoring the videos entirely. As-is the gaps between videos and assignments, on the one hand, and ongoing difficulty of knowing how to navigate the black box which is the autograder (using an outdated version of pandas) are shunted to the forums and other students, volunteers, and assistants. While the forum is helpful (always start there with the assignments, so you will waste less time on poorly designed / assessed questions!), it is poor pedagogy and a bad experience to offload bad course design onto it.
By Lucas C•
Sep 1, 2019
Overall: I felt this course was useful but pretty time-consuming. The course had relatively limited taught material and relied a lot on searching & self-studying. If you have a fair amount of time it is a good choice.
Pros: You learn through doing assignments which are well supported by mentors/community. Also, you get used to studying through googling problems and learning from websites such as Stackoverflow.
Cons: Whilst this learning method definitely had its merits, it could be quite time-consuming for someone seeking to gain introductory-level skills quickly. You could find yourself in situations where you spend hours searching for something quite elementary and could easily have been taught to you, which could be frustrating. I personally think this course could be improved by adding a bit more small quizzes for beginners to play around with the basics, before requiring them to self-learn through searches.
By Susan C•
Feb 9, 2021
The lectures were essentially the instructor reading from the provided Jupyter notebooks at _very_ high speed. You can slow down the video, but then you get a weirdly artificial drone that is hard to listen to. And the lectures jump briskly from topic to topic without providing any context, or advice about writing good programs. The assignments took WAY more time than estimated because (a) there was a lot of self-learning via StackOverflow (b) the auto-grader is very very finicky. (It would have been useful to have a quick demo video showing how to approach the assignments and deal with the auto-grader).
That said, the people (TAs?) helping on the forums were very helpful. And I learned quite a bit, but mostly on my own.