Who is a Data Scientist?

Introduction to Data Scientist

Data Scientists are defined as the analytical experts who uses the technology and social science skill to figure out the pattern and manage the data. These people are good with collection, enquiring and analysing the data to make a sense of the unstructured, messy data from various sources such as social media, emails, smart devices etc. along with these they should be good in working with the database, collaborating with other departments to collect data, updated with latest trends related to database, etc.

Who is a Data Scientist?

• Data Scientist is a person who works on structured and unstructured data using scientific methods, processes, algorithms and different systems to extract knowledge and insights. They are analytical data experts with sound technical skills to solve complex business problems along with an analytical mindset to explore what next to solve.
• You can call them a combination of mathematicians, statisticians, and computer science experts. They become popular because of the popularity of big data in business. Business is generating a tremendous amount of information in terms of unstructured data which needs different attention! This field is gold mine of information and trusts me, data scientists sit on this goldmine to extract useful information that no one has looked upon.
• Mostly data scientists start their careers with statisticians or data analysts. But today there is a requirement for much more because of the enhancement in big data and Hadoop processing. They are not only responsible for similar kinds of work. One day they might deal with the text mining project, the next day it could be a predictive model. Hence a data scientist needs to be skilled with varied technologies.

Responsibility for Data Scientist

As a data scientist you need to be responsible for a few out of many things:

• Collecting raw data from different sources and transforming it into a usable format.
• Finding business problems and solving them with a data-driven approach.
• Proficient in analytical programming languages like R, Python, SAS.
• Solid statistics knowledge like distribution, hypothesis, etc. for descriptive analysis.
• Knowing in and out of analytical techniques like Machine Learning, Deep Learning, and Text Mining.
• Ability to communicate with technical professionals and end-users to identify and translate business requirements.
• Pattern and trend detection to help business future roadmap.

What Should a Data Scientists Know?

• Data Scientists should know how to handle a data science project from end to end and technologies behind this to make it happen. For data collection from various sources, data scientists should know either basic programming language like SQL / Python / R or analytical tools like Talend / Pentaho / Spectrum. Because now data is not only coming from tabular databases hence knowledge of big data is extremely required.
• To extract data from NoSQL databases or through the web, Apache Kafka or Flume or other analytical tools are being used. Data Preparation is another huge responsibility for data scientists hence they need to know data wrangling, data munching and data mining.
• Data scientists should be well aware of statistics to perform data analysis in order to understand the patterns and trends coming out of data. They should have an analytical mindset to understand the problem statement and finalize the solution approach. They should have machine learning/deep learning knowledge so as to apply algorithms on the data. And In the end they should be able to represent the outcome of the findings in the form of data visualization. For this, they need to know at least one BI tool like Power Bi, Tableau, Qlikview, etc.

Did I confuse you? Or you just got scared because of these high terms? Don’t worry! We will try to correct our basics first. So let’s move on to the skillset that is must require.

Data Scientist Skills

Being a data scientist isn’t a walk in the park. You are expected to be a walking encyclopedia in this domain who knows almost everything that belongs to machine learning, computer science, statistics, mathematics, artificial intelligence, deep learning, visualization, data analysis and much more! The required skills are quite a niche and very few people are blessed to have the rightful knowledge. So, let’s try to understand what are the most in-demand skillset to become a data scientist.

Researchers have found the most in-demand skills like Statistics, Data Analysis, etc. from the interview platforms like LinkedIn, Indeed or Glassdoor.

The trend has shown that a data scientist should be very well versed with Data Analysis to glean insights from the data and should be able to apply machine learning and statistics over the raw data. Data scientists should be aware of either of the programming language, be it R or Python. For data science, R is preferred but python is easy to learn. Advanced Machine Learning, Deep Learning, and Big Data Frameworks are by default considered to be the only cup of tea for data scientists. And at the end visualization because without storytelling, you are not considered to be the one deserving candidate for a data scientist role. We can categorize these skills broadly over three domains:

• Statistics / Mathematics
• Business Communication / Leadership
• Computer Science / Programming

1. Statistics

Statistics is a field that focuses on extracting useful information from collected data using statistical measures and formulas. Hence all data scientists need to know in-depth statistics. You need to perform at least a descriptive analysis of any data science project that requires basic concepts like probability, distribution, outliers, etc. which you will learn in statistics. You need to know statistical core concept like Descriptive statistics, distribution, hypothesis, and regression. Further, you will be expected to know Bayesian probability theory which includes conditional probability, prior probability, posterior probability, and maximum likelihood estimation.

2. Business Acumen

Data Scientists are expected to know the business problems of the industry they are working in. They should know which problems are important for business and how to deal with it with the available data and how these decisions will impact on the business. Business awareness is now essential to explore new business opportunities.

3. Programming Language (R/Python/SQL)

Although many statistical tools are available in the market like SAS, Knime, RapidMiner, etc. but knowing at least one analytical programming language makes you headstrong in the mathematics of the operation you are performing. You can manipulate data according to your requirements. Python and R are the most used languages by Data Scientists because of the variety of packages available for the statistical computations. SQL is an all-time favorite and no matter which company you are going, they will test your core SQL knowledge for data science. It is very much required to get the data from the database before starting using it hence SQL is also one of the major requirements for becoming a data scientist.

Benefits of Data Scientist in Business

Below are the five points explain Data Scientist benefits in Business:

• Empowering management and business for better decision making with the data-driven choices.
• Analyzing trends in the organization data and predicting future based on past trends.
• Selecting critical issues from the pile of problems that matter to the business utmost.
• Figuring new opportunities by digging down the organizational current analytics system.
• Focusing on the rightful target audience to maximize organization growth and revenue.

Conclusion

Yes, becoming Data Scientist is no easy task. But at the same time, it is not impossible! You just need to have the right spirit to learn and be updated. It is the most in-demand position in the market and going to be boom for the next 10 years! So prepare your horses and start filling your toolbox with these amazing skills and make this title as yours!

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