## Introduction** to **Data Scientist Skills

Data science is a buzz word for all the job hunters in the market. It has inspired many that the number of online platforms to teach data science outnumbered other computer skills. So what skills are needed to become an efficient data scientist? The knowledge of given data is sufficient, or whether I have to learn something new? I know a few statistics and excel; will that be okay to be a data scientist? See, I am very good at programming languages; I think I’m going to be a great data scientist! So let’s check out what skills are important for a data scientist.

### Important Data Scientist Skills

Below are the important skills for Data scientists:

#### 1. Statistics

I was very good at solving statistics and probability problems during my school days which I missed in my software world. The world of statistics is awesome. Okay, at least for like-minded people and me. So what could bring me back to statistics other than Data Science? Believe me, folks, statistics are really important for the analysis of this vast pool of data. Statistics itself means the collection, interpretation, and analysis of data. This explains why statistics are important in this field. Prediction of future data is as important as the analysis of data. Knowledge of the basics of statistics and probability is important to predict the behavior of data.

#### 2. Python/R

I hated programming more than anything because learning C, C++, and others were complicated as I didn’t understand their logic at all. As a blessing, I came across the Python language created by Guido Van Rossum. It’s so easy that we can enter print (‘Hello World!’) and get the output. In other languages, we have to write 3 lines to get ‘Hello World’ printed. All the built-in functions are easy to learn and understand. Data types like lists, tuples, dictionaries, and others are easy to grasp and learn. There is a saying that if we learn python, there is no going back to other languages as this is super easy. We have many libraries for data analysis and model building in python like Numpy, pandas, matplotlib, etc. All these libraries help in building a good model for the data. Jupyter notebook is good for doing data analysis problems.

Ross Ihaka and Robert Gentleman developed r. R has statistical, graphical, and machine learning methods the same as python. However, the graphical representation of R is better when compared to python. R’s data types include character, numeric, integer, complex, and logical. If python is so good, then why R? R is good for communication and programming as well. If you are new to the programming world, it’s better to learn the R language. R is mainly used for data analysis, while python is considered as the general-purpose programming language. Hence, it is beneficial to know both languages. Who knows, you may become a master in both! Also, both are free to download and use in Windows, MacOS, and Linux.

#### 3. Excel/SQL

When my boss asked me whether I know Excel, I was like, who doesn’t know it. But seriously, guys, there is a lot more to learn in excel. Statistics and probability functions are built-in excel; deep knowledge in excel is important so that it makes it easy to compute the data. Graphs can be drawn; what-if analysis can be done, pivot table to extract data, and many more options in excel, which in itself makes a different world. Isn’t it amazing to think that excel is still being used as an unavoidable tool in the world of data science? Charts and formulae help to formulate data and to see data differently. This helps in the visualization of data. Excel can also be used as an optimization tool.

In order to get data from the database and to work with the data, SQL or Structured Query Language is very much needed. SQL is used to create a table without physically seeing it, read data from the table, or update the data in the table. The most used commands are select, insert and update. SQL has a standard for its commands. We can call it exactly as Structured language for the database. SQL is case insensitive, unlike python and R.

Excel is a program, while SQL is a database programming language. SQL Server as a database management system while excel is used for data analysis and calculation. Knowledge of both is equally important to become a skillful data scientist.

#### 4. Communication Skills

Being a master in python and doing the graphical interpretation after doing data analysis doesn’t make a data scientist unless you don’t know how to communicate the findings you have done in data. Communication is very important between team members you have been working with and the audience. When data scientist interviews are done, the interviewer looks for good communication skills, which add up as a weight for the job. Creating stories from data is not an easy task. The audience can be from different areas: technical and non-technical people. Engaging everyone in a single presentation is tiring as well as interesting. A data scientist should be a good storyteller.

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#### 5. Creativity

Creativity is important in data science. At times, you may find it difficult to find an outcome from the data given even after applying all the analyses you know. Here you should use your creative thinking to predict which is possible and which is not. It can help in producing good results for your interpretation. A data scientist should always be curious to know what can happen with the data given. Also, data scientists should work with all the people in the company to know the flow of data. Data scientists can’t work alone. Linear Algebra, Calculus and Numerical Analysis are important math topics for a data scientist. Mastering all these can make you a great data scientist. But update the knowledge base and be curious to learn something new always. It may be hard to learn everything if you are just starting your career in data science. But hard work pays off in the end, and you will love playing with data.

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