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Avis et commentaires pour d'étudiants pour Les outils du scientifique des données par Université Johns-Hopkins

33,513 évaluations

À propos du cours

In this course you will get an introduction to the main tools and ideas in the data scientist's toolbox. The course gives an overview of the data, questions, and tools that data analysts and data scientists work with. There are two components to this course. The first is a conceptual introduction to the ideas behind turning data into actionable knowledge. The second is a practical introduction to the tools that will be used in the program like version control, markdown, git, GitHub, R, and RStudio....
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Foundational tools

(243 avis)

Introductory course

(1056 avis)

Meilleurs avis


7 sept. 2017

It was really insightful, coming from knowing almost nothing about statistics or experimental design, it was easy to understand while not feeling shallow. Just the right amount of information density.


14 avr. 2020

As a business student from Bangladesh who is aspiring to be a data analyst in near future, I love this course very much. The quizzes and assessments were the places to check how much I exactly learnt.

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101 - 125 sur 7,038 Avis pour Les outils du scientifique des données

par Chandra B

1 mars 2018

The Professor's are just amazing in their knowledge. The slow bits of information and the way testing is done is so methodical and so well planned. If anybody says they are bored then I am sure they are bluffing, as I found out how enjoyable online learning can me. I am 40, working and a father of 2 children, time is scarce and this online way of learning with financial aid, I could not ask for anything more. Coursera is helping people like me find a hope of learning at their own pace, place and with their financial aid program helping poor people from developing countries like India see the light at the end of the tunnel. I really am indebted to Coursera for changing my life and helping me dream of a career transition even at this age, as in India if you tell anyone that you are studying at the age of 40, they would laugh and make fun of you.

par Ramalakshmanan S P

23 févr. 2016

I have completed the Data Scientist's Toolbox. I enjoyed learning this course. I learned a lot of new concepts, installation of R, R Studio, hands-on with these and GITHUB.

The lessons are well balanced and help me learn the concepts and the tool usage in a cool way. I liked the Quizzes, Assignments as these help me evaluate myself and instill confidence within me. Now, I've the confidence in work on any of these with certain amount of instructions.

However, I feel that certain guidance on progressing further with respect to R, RStudio, GITHUB could be provided as additional study material.

Thanks to Coursera for providing such a wonderful course and to Prof. Roger D. Peng, Jeff Leek and Brian D. Caffo for their meticulous effort in designing this course and helping in my learning.

Wishing my Professors and Coursera all the Success.

par Miguel C

10 mars 2020

The course is really well organised and challenging.

It gives a good introduction to data science, as well as some currently relevant concepts related to it, such as machine learning and big data. I found it easy to understand and I enjoyed the pacing. Moreover, I really appreciated the time this course spends on teaching some of the basic tools that are needed in data analysis, namely R (and RStudio, R Markdown) and Github.

You are constantly challenged by small quizzes to make sure you really understood the material. They're not too complicated that you would get frustrated, but also not too obvious that you'd be bored by them, and more often than not you even learn other things from these quizzes.

I definitely learned a lot and would recommend it!

par Carlos M

15 juil. 2016

It's a good first step into getting the right programs, learning key vocabulary, and interacting with important websites/programs at a very introductory level.

If you are not from a math/statistics background you can still complete the course but you will not understand the previews for later courses completely, that is ok! But consider getting the eBook with this course.

My only complaint is the quizzes, it often feels impossible to get a 5/5 based on only what you get from the lectures, there's always 1 question that is completely over the top compared to the other 4, but you can do the quizzes 3 times every 8 hours and just trial and error the 1 gotcha question on each quiz.

par Ashish G

28 août 2019

The Data Scientist's Toolbox is the first course of the Data Science course by Johns Hopkins University. The course contains constituents which are needed to build a base for future data scientists. 4 weeks of the course contains the basics of data science, Installing R and Rstudio, working on Github and many more things. The course is suitable for people who have no prior knowledge of data science and are looking to find something which contains the basics of the topic. If you're in a dilemma of studying something which is related to data science and you're not aware of the basics of it then I recommend you to select this course and study. All the best!

par Panagis L

5 juil. 2017

It was interesting to see how a University is approaching topics which are considered "Core IT" and present them to non-IT people. Though I consider myself very strong as an IT with a master's degree and heavy experience in databases, Matlab and some R, it still had many things to give me and most of all, a methodology in setting up a lab environment. Although I was graded lower in the last assignment because I use Visual Studio Extension for R, by someone who does not know that R is one in the system and the shell may differ, I strongly believe that the rest of the courses will provide the methodology needed to approach complex data science problems.

par Jaime A

27 mai 2018

Very interesting intro to data science, but the focus on command line Git may drive people away (although it was a great contribution for me!) I would use that time and effort to delve deeper in the concepts that a person must grasp in order to understand the challenges that are better tackled by using data science.

I believe there is a big and harmful disconnect between the ideas that decision makers have of their understanding of world "out there", and the real possibilities of observing and making sense of it. If this course would help narrow that gap, even a little bit, then I believe more people would be using the insights of this discipline.

par Peter B

23 janv. 2021

This course was exactly what I was looking for as a first step to learning R, It gives you an overview of data science and then installing R, Rstudio and R packages. It introduces version control and again takes you through using this in a step by step manner. If you are not familiar with R and want an introduction I would recommend this course. The assignments are based on the work already done and as such act to reinforce the week's learning. The time per week is about 4 hours. My experience is that I always spend at least a couple of hours longer so it was ideal as I am fitting it around a full-time job.

par Paulina M

27 juin 2016

Great introduction. The lessons were clear and easy to follow. Github is a new tool. I used to be shy about using Github because I didn't understand all the commands, but I'm confident I'll pick it up easily during the rest of the course. I already feel more comfortable with it.

I'm a mechanical engineer, so this is a different way of thinking for me. I was amused by the lesson on what data is and about the kinds of data analysis because the data I look at always comes a CSV file / Excel file, and I only do mechanistic analysis. So I'm looking forward to expanding my definition of data and analysis.

par Marco H

17 mai 2016

This course is a good first into to the topic. I think that the additional reading from the book and the Git manual will supplement it very well.

My only complain is that in the first quiz, there was a question regarding some R packages used in Machine Learning that were not covered in the slides. It took me a while to find those so I had to take the first quiz 3 times. I think this question should be revised to guide the student as to how to find these packages. Another alternative would be that in the slides there some guidance in this matter.

Otherwise, I liked to course and the final assignments.

par Jack D

1 nov. 2017

This was a great opening course for the Data Science specialization because it talked about the tools that will be used to illustrate the concepts that are coming later. In other classes, the education on the subject matter is presented in the primary position, with tool instruction woven into those lessons. That model gives me two different priorities ( learn the topic and learn the tool ) and that competition for attention is suboptimal for me. I find myself having to revisit course content if it takes extra effort to learn some piece of technology used to demonstrate it.

par Richard L

1 mai 2019

Overall the coverage of github was at an appropriate level for me to understand and for that I am very grateful, as I was too lazy to force myself into learning how to use it up to this point. The coverage of installation of important programs was also a great way to introduce a subject before diving into the details. The broad coverage of the overall core curriculum was nice, and I am excited to learn how to use R as it seems like it will be around for a while (even though i'll always be faithful to my C/C++/fortran roots). I look forward to enjoying the rest of the program.

par Douglas L

17 mars 2017

Conforme o proposto o curso é muito bom, a didática é muito boa. Mas, gostaria de deixar uma observação, em um determinado momento senti a curva de explicação muito alta. Por exemplo, no ultimo curso da semana 3 ficou muito complicado de entender, achei que entrou em alguns assuntos ainda complicado para quem está iniciando, até essa aula estava subindo numa constante mas depois parece que deu um salto muito grande, para mim, que fiquei um pouco "perdido". Fora esse ponto, gostei muito, parabéns pelo trabalho. Espero aprender tudo da maneira correta, Muito obrigado novamente.

par David A M S

28 juin 2020

Es un buen curso introductorio, aprendes como instalar R y RStudio en Windows y Mac, si lo haces sobre Linux (mi caso) te tocará investigar por tu cuenta. También aprendes un poco de su interfaz, paquetes que se usan y su integración con Git y GitHub (si estas en Linux también deberás investigar por tu cuenta). Al momento de mi comentario esta todo en inglés y eso no es una desventaja pero si no eres bueno con el idioma como yo tocará hacer algunos pasos extra para traducir el texto, sin embargo no es algo que impida el aprendizaje.

par Harshit K S

3 mai 2020

I love the course and the material provided. however the mechanical voice in the video is somewhat a weak point. when some real person read or present they use voice modulation as per various circumstances in the presentation, which is recognize by the listeners' brain and perceived accordingly. however, as you have mentioned the reason for use of this voice due to rapid changes, it a worth compromise. I had fun and learned a lot. Thanks to creators for their efforts and time they have put. Thanks to Coursera to bring this course.

par Vishnu J

1 févr. 2020

Nice course. I got basic idea about data science, R and Rstudio. I have previous knowledge about Git. Apart from the contents, the new way of presentation is not impressing, many of the lengthy videos, it was annoying. Like, if it is a real human video, the instructor will change the tunes and it is more important in the communication. I am suggesting the same method with a human voice instead of computer generated audio/explanation. I rated 5 star for the way of progress, the context of each lesson. I felt I learned new things.

par Francisco M M

24 août 2017

Excelente curso!! Te brinda todas las herramientas y un muy buen material de estudio, además de enseñarte minuciosamente los conceptos y partes básicas para poder aprovechar bien los primeros recursos. Y me parece un buen enfoque ya que considero que no solo se debe tratar de una "transferencia de conocimiento", sino que los alumnos debemos despertar la curiosidad y hambre por investigar para profundizar más en la diversidad de temas que tenemos por estudiar.

Muchas gracias por su dedicación y esfuerzo al elaborar el curso.

par Bram V

1 mai 2018

I really appreciated that the instructors took the time to go into theory and history before writing a line of code. I think an introduction or more reference to necessary statistical/mathematical knowledge would be good, but I understand if that's outside the purview of the course.

I also love the amount of extra, supplemental material you can review, whether it's a linked article or Leanpub book written by the lecturers. Would definitely recommend this course to other people interested in data.

par sonal g

3 févr. 2019

Providing feedback means giving students an explanation of what they are doing correctly AND incorrectly. However, the focus of the feedback should be based essentially on what the students is doing right. It is most productive to a student’s learning when they are provided with an explanation and example as to what is accurate and inaccurate about their work.

Use the concept of a “feedback sandwich” to guide your feedback: Compliment, Correct, Compliment.

par Mrv

9 nov. 2022

It's a great way to start the course. It provides basic knowledge and understanding of the tools. Instruction are clear and easy to follow.

Peer review can be challenging as I notice on my work that the answers were correct but the other peers are saying is wrong. What I notice is this will be considered correct but if the text is datascience with a hyperlink, it is considred wrong. It will be good if this will be reviewed.

par Martins P

6 août 2021

Very helpful and well organised, easy to follow and I believe it sets you up very well for the following courses.

If you are looking to learn R and have some previous statistical analysis background (I have learned Minitab 19 for about 3 years now) but have no coding knowledge, I would reccomend not skipping this course as it will help you set up R and introduce you to its basic functions, otherwise it could seem a bit overwhelming.

God bless

par Jesson P

26 juil. 2018

I think that the course is effectively introduces students to the basic toolkit of data science--informative materials, good explanations, and the accessibility to knowledge sharing through the discussion forums.

One suggestion please: It would be very convenient if you could put the links in all the videos in a place where the students could readily access them (contrary to needing to donwload the slide first to be able to access the links).

par Josh C

28 janv. 2016

Excellent. I had a little trouble interpreting my lessons and completing the final project but I figured it out. I was under the impression from the previous videos and the assignment descriptions that I needed to do everything via "Git Bash" in my Mac Terminal, rather than just going and doing it all on Either I completely misinterpreted or something was lost in translation right there towards the end. Loved the course though.

par Pat B

9 nov. 2016

This course is awesome. It takes you by your hand from the very beginning and leads you through all the process to install softwares and sign in on the most up-do-date tools to work on Data Science. And, besides being very friendly, it doesn't stay superficial on the subject. Another highlight is the quality of the material and of the experienced instructors. Excellent value for the investment. Highly recommended if you are a beginner.

par Juha R

11 avr. 2018

I think they have pretty much nailed it with this course/specialization. I have tried several courses on data science from Microsoft, EDX and Coursera and they always seems to lack something. They are either too nimble, lacking the big picture, or they are too long or badly designed. The team is great, they have a very hands on experience on data science and the learning goals are presented in a palatable manner. Excellent course!