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Learner Reviews & Feedback for Process Data from Dirty to Clean by Google

4.8
stars
15,085 ratings

About the Course

This is the fourth course in the Google Data Analytics Certificate. In this course, you’ll continue to build your understanding of data analytics and the concepts and tools that data analysts use in their work. You’ll learn how to check and clean your data using spreadsheets and SQL, as well as how to verify and report your data cleaning results. Current Google data analysts will continue to instruct and provide you with hands-on ways to accomplish common data analyst tasks with the best tools and resources. Learners who complete this certificate program will be equipped to apply for introductory-level jobs as data analysts. No previous experience is necessary. By the end of this course, learners will: - Check for data integrity. - Apply data cleaning techniques using spreadsheets. - Develop basic SQL queries for use on databases. - Use basic SQL functions to clean and transform data. - Verify the results of cleaning data. - Write an effective data cleaning report...

Top reviews

LT

Jul 9, 2023

I'm glad I took this course. The instructor is warm, upbeat and very clear. The materials are very informative and helpful. I gained more understanding of cleaning data as well as built my SQL skills.

KK

Feb 13, 2022

Every concept they explained crystal clearly and thoroughly. I am so happy that I am learning all these courses at free of cost. As soon as I get data analytics job, I will pay the fees without fail.

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By Richard C

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Jun 17, 2022

I really like the course overall. The instructor is great. I love the videos and I think that they are some of the highest quality that I have ever seen on Coursera.

My criticism has to do with the quizzes. I honestly found the quizzes to be ridiculously nitpicky to the point of being almost funny. I'd watch around an hour of videos for a week, read everything, and then I'd have issues with certain mulitiple choice questions. Sometimes for the mutiple choice questions that require a single answer, I think at least two of the options are arguably acceptable, but only one is correct. It gets goofy when the questions overly emphasize definitions of non-technical terms which are stipulatively defined in the videos and then we get quizzed on extremely precise aspects of those definitions. In general, this makes the quizzes a lot harder than they need to be, but in a way that is artificial and doesn't really do anything to help us learn. You could learn this material, be able to do the SQL queries and data cleaning in spreadsheets easily, and then still have an issue with the quizzes. That ends up making a great course into a really frustrating experience.

By Sherry R

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Nov 14, 2023

While this is all fascinating, I feel it went by very quickly and that I didn't get enough practice with all the SQL and even spreadsheet functions. I am not confident that I really know all this and will definitely need to review a lot of the videos, probably make flashcards, review the glossary, etc. It's kind of cumbersome, with the templates and stuff, to follow along with the videos while the instructor is talking. This is something that either needs to be viewed more than once (although of course some people learn faster than others, and some come into it with experience others don't have), or needs extra time studying on one's own. I really love it, don't get me wrong, but I don't want to rush myself and then realize I don't really understand, know, and remember everything. So, what I'm saying is, be prepared to spend more time on this section than the previous ones.

By lisa h

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Aug 31, 2021

It was my understanding that you could accomplish the course of data analyst without any background in this field and I do not find this to be true. There have been many times that I have had to venture out on my own to gain understanding of what is being taught to me and how to complete some of the assignments. This is a great course for someone that has some understanding of spreadsheets to start with. I do recommend this course and and enjoying the challenges in front of me. When I have received my certificate I will truly know how hard I worked to achieve it.

ADDENDUM: Apparently this course is over and I have earned my certificate. I feel like there is so much more for me to learn and I did keep hearing the instructors say there is more that we will get to ... but where and when? There isn't even anything directing me to more courses.

By Anna B

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Aug 9, 2021

Each course improves upon the last. I am enjoying this certificate. Thank you.

Here are some ideas that I think may add value to the course:

2. Since this course is about cleaning data, I feel providing a dataset to clean would be more valuable as a final course challenge than a multiple choice quiz. It would provide practice, encourage starting to make independent cleaning decisions and be a valuable learning too.

3. My next point is best made with a description. In the Hands On Activity, Week3, we are directed what to do. However, I do not know, for instance, when to decide to use the SELECT DISTINCT statement or the SELECT MIN/MAX statement. Activities like this have been really valuable and I think they would benefit if students could understand more about what to do rather than following instructions.

By Natalie W

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Jul 24, 2022

I work in post-secondary (college) where resumes and job search skills are a required part of our programs. I wasn’t expecting to learn these skills in this certificate! Although I found the information invaluable, the placement within this course bogged…..me….. down. My mind just wasn’t ready for it yet. I found it difficult to speculate what my new skillset would be mid-way through the certificate. It will be much easier to complete a new resume once I have completed the certificate and have all the information at the time. I feel it would be best delivered as an optional part of the certificate at the end when my mind and my attention can focus on completing my resume, and begin to look for new employment in the data analytics industry. Having said this, data cleaning is what I enjoyed the most so far!

By Mattia P

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Sep 22, 2023

Pretty good course, like the previous ones. I like the hands on approach. Even though it never gives you a feeling of having covered everything in a topic, and no theoretical boxes where to put new information, it's very stimulating and I can say I learned a lot. Now for some criticism: The first two weeks were hard. New terms were not very well defined, and the structure of the lectures wasn't clear. They felt redundant and blurry. More than once I felt like lectures or assignments assumed I knew something thant hadn't been covered. In later weeks, I have the feeling that we were not prepared to answer some of the questions, most frequently because the wording of the questions were different than the wording in the lectures. I wish I didn't need a free trial version of BigQuery.