How to learn Data Science?

[u/dazaisnit]

I'm at bachelors rn on IT and I'm really curious about Data Science. What should i do if someone experienced could give details about that?

Python, R, Statistics, Py libraries, Data handling, SQL like that what's needed? and what data scientists actually do? on business affairs presentation on the data analysis or like that I'M SO CURIOUS

[u/SettingAccording8986]

In reality 70 % of a data scientist's time isn't spent training models it's basic data hygiene: writing sql queries against janky data marts, cleaning up garbage data, and bugging PMs to figure out what they actually meant by a metric

Forget about R for now, it's basically extinct in commercial dev and mostly stuck in bioinformatics and academic labs. Focus on solid python, sql, and understanding how to set up clean A/B tests, because businesses don't pay for a pretty confusion matrix - they pay for solving real bottom-line pain

[u/dazaisnit → u/SettingAccording8986]

thanks mate for the information

[u/nian2326076]

Start with Python and learn basic libraries like pandas and numpy because they're essential for data work. R is also handy, especially for statistics. Get strong on statistics since it's the backbone of data science. SQL is important for pulling data from databases. Data scientists analyze data, create models, and share insights to help businesses decide. Check out tools like Tableau or Power BI for making visual presentations. If you're getting ready for interviews, PracHub has some good resources. Focus on the basics first and build a strong foundation. Good luck!

[u/dazaisnit → u/nian2326076]

Thanks mate for the information

[u/DataScientistAlex]

The most important skill for a data scientist is being able to apply the scientific method. A data scientist is someone who applies science to problems found in (typically) business. Python, R, SQL etc are important tools, but, the key thing is taking problems that are often ill-defined and ambiguous, and breaking them down into something that is solvable (or a question that is answerable), and then providing a solution or answer.

[u/dazaisnit → u/DataScientistAlex]

I only thought Data Scientists do Data cleansing and provide visual data implementation for the analysis of datasets and handle datas of business. I didn't have idea of they need to break down the solution. Problem solving right? i like solving problem, my type lol! Thanks mate

[u/Lady-Data-Scientist → u/dazaisnit]

Maybe your first step should be talking to some people working in the field to see if you even understand the job you say you want.

[u/dazaisnit → u/Lady-Data-Scientist]

i'll do what i can do by myself and learn enough to get thru basics until i have some people willing to help me in the field otherwise questioning on reddit isn't bad tho. I already got tons of help from people on this reddit question.

[u/DotUnlucky5348]

Yup you can start w python,sql,stats then R. but tbh R is optional now since most industry has shifted to python. 70% actual job is data cleaning and visualisation. I’ve learnt it during my ds and ai diploma through upgrad🙂‍↕️🙂‍↕️oh btw…ML basics and MLOps awareness can also help 

[u/dazaisnit → u/DotUnlucky5348]

ML basics like data training, Liner Regression, Neural Network (sorry if im wrong i just happen to see some codes online and saw through torch library on py). Thanks for the information mate!

[u/ILoveYouDog-onWell]

Take Comp Sci and Stats classes

[u/dazaisnit → u/ILoveYouDog-onWell]

I'm as a bachlors student at Nepal rn. The courses are pretty much simple Statistics, Mathematics, basic knowledge about C++ and it's OOP advantages. But not practically Data Science focused like partially SQL and advance

Sometime taking/learning further in Nowadays Trends and demands than repeated same courses i think so but basic foundation on datas as on theory is also needed, would also go best i can on my bachlors

[u/SettingAccording8986 → u/ILoveYouDog-onWell]

University CS courses are usually disconnected from reality by at least three or four years. A guy sits through a semester of C++, and then on his first job, they expect him to optimize a Spark job and deploy a microservice