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What do Data Scientists do?

Data Scientist

As technology continues to advance rapidly, organizations are increasingly turning to data science platforms to help them manage the large quantities of data being generated. The use of AI, ML, and IoT is on the rise, leading to a greater demand for technology that can increase productivity and efficiency. The growth of enterprises depends on modern data handling systems and solutions, making the data science platform an increasingly important tool for different industries. According to Precedence Research, the data science platforms market size is estimated to hit around USD 378.7 billion by 2030.

Data science is a field that uses a variety of techniques and tools from computer science, statistics, and domain expertise to extract insights and knowledge from data. It encompasses a variety of activities, including data collection, data cleaning, data visualization, statistical analysis, machine learning, and more.

Working with vast and complicated datasets, which can be challenging to handle and analyze using standard techniques, is one of the main problems in data science. Artificial intelligence (AI) and machine learning technologies can help with this. These tools enable the detection of patterns and trends that would not be obvious using traditional techniques, allowing data scientists to evaluate and make sense of massive volumes of data.

What exactly are data scientists, and what do they do?

Data scientists are professionals who draw insights from raw data. They work with a variety of data sources, including structured data from databases, as well as unstructured data such as text, images, and video. Data scientists use programming languages to process and interpret data sets, create models to analyze large volumes of information efficiently, and communicate findings with organizations so that they can take action.

Data scientists often have a strong background in math, statistics, and computer science, and are skilled in programming languages such as Python and R. They also have strong problem-solving and communication skills, as they often work with non-technical stakeholders to translate complex data concepts into understandable insights.

A simple visual explanation of "What Data Scientists Do".

How To Become A Data Scientist?

The first step towards becoming a Data Scientist is you must have a bachelor's degree in a field such as computer science, mathematics, or statistics is a good starting point for a career in data science. Practical knowledge is important as well since data scientists will face a lot of real-world challenges. Learning programming languages such as Python and R is important since Data scientists mostly use those programming languages to analyze data and build models.

Obtaining a certification, such as the Microsoft Certified: Azure Data Scientist Associate certification, can demonstrate your expertise and credibility to potential employers. Staying up to date with the current advancement is crucial. Data science is a rapidly evolving field, so it's important to pay attention to the latest technologies and techniques through continuing education and professional development.

Skills required to be a Data Scientist

Data science requires knowledge of a range of big data platforms and technologies, including Hadoop, Pig, Hive, Spark, and MapReduce, and programming languages such as SQL, Python, Scala, and Perl statistical computing languages such as R.

Hard skills required for the position include data mining, machine learning, deep learning, and mixing structured and unstructured data. Only a few of the statistical research methodologies required are modeling, clustering, data visualization and segmentation, and predictive analysis. So, how does one go about becoming a Data Scientist?

1. Probability & Statistics

Probability and statistics are principal for data scientists because they provide the mathematical foundations and tools for understanding and analyzing data. Probability theory helps data scientists understand the likelihood of certain events occurring, and statistical methods allow them to draw inferences about a population based on a sample of data.

Probability and statistics are essential for data scientists because they allow them to:

  1. Understand the underlying distribution of data and make predictions about future events

  2. Identify trends and patterns in data that might not be immediately apparent

  3. Test hypotheses and make informed decisions based on statistical evidence

  4. Build statistical models to understand relationships between variables and make predictions about future outcomes

  5. Evaluate the reliability and validity of their data and results

In short, a strong understanding of probability and statistics is necessary for data scientists to effectively and accurately analyze and interpret data.

2. Mathematical and statistical concepts

Data scientists need to have strong foundations in mathematics and statistics. They should be proficient in various statistical methodologies, such as descriptive statistics, probability distributions, and inferential statistics. Therefore, it is important for data scientists to have a thorough understanding of calculus and linear algebra, as these concepts are used in machine learning algorithms. Data scientists working within companies that are data-driven may be called upon to use their knowledge of statistics and mathematics to generate insights and make informed decisions.

3. Multivariate Calculus & Linear Algebra

Multivariate calculus and linear algebra are important for data scientists because they provide the mathematical foundations for many machine learning algorithms. These fields allow data scientists to understand how these algorithms work, and how to effectively apply them to real-world problems.

Multivariate calculus, the extension of calculus to multiple variables, is particularly useful for understanding optimization algorithms, which are commonly used in machine learning. Optimization algorithms find the minimum or maximum of a function and are used to train machine learning models to make predictions with high accuracy.

Linear algebra, the branch of mathematics that deals with linear equations and matrices, is essential for understanding many machine learning algorithms, including principal component analysis, singular value decomposition, and matrix factorization. These techniques are used to reduce the complexity of data and are particularly useful for tasks such as dimensionality reduction and data compression.

4. Programming skills

As a Data Scientist, digital data will be utilized to translate hypotheses into practical applications. Proficiency in Python, R, and Julia is crucial for success in this field, as each language offers distinct advantages. Python is a flexible language with robust data science libraries and efficient prototyping capabilities. R is specifically tailored for statistical analysis and visualization. Julia, on the other hand, boasts both versatility and speed. Therefore, to thrive in data science career, it is imperative to develop programming skills in these languages.

This is a good way to start if you want to learn Python for Data Science.

Python Popular Courses

5. Modeling and Analytics

Data analytics can be used to investigate data. Data analytics techniques can discover trends and metrics that might otherwise be lost in a flood of data. This information can then be used to improve procedures and increase a company's or system's overall efficiency.

The process of assigning relational rules to data is known as data modeling. A Data Model simplifies data and transforms it into useful information that businesses can use for planning and decision-making. These are critical steps in the Data Science procedure.

6. Analyzing and Visualizing Data

It is critical to comprehend the data. Data analysis is the process of cleaning, transforming, and modeling data to extract useful information for corporate decision-making. Data analysis aims to extract useful information from data and make decisions based on it.

Data visualization is a crucial component of data analysis. Data visualization is displaying information in a visual or graphical format. It enables decision-makers to view analytics in a visual format, making it easier to grasp complex issues or detect new patterns. With interactive visualization, you can take the concept further by using technology to drill down into charts and graphs for more information, changing what data you see and how it's handled constantly.

Microsoft Power BI and Tableau are two excellent visualization tools. Data visualization can also be done with Python packages like Matplotlib and Seaborn.

7. Machine Learning

For any data scientist, machine learning is a must-have ability. Machine learning is used to construct predictive models. Machine learning is a branch of computer science that studies how to get computers to solve problems without being explicitly instructed. This field encompasses a diverse set of techniques that are commonly categorized as supervised, unsupervised, or reinforcement learning. Each of these ML types has its own set of benefits and drawbacks. When algorithms are applied to data, learning occurs. Each of these machine learning algorithms employs a different method. In machine learning, algorithms are instructions for carrying out an operation. They use data to recognize trends and then "learn" from them. Machine learning also plays an integral form in other industries besides IT industries. Let's take a look at the breakdown.

Some of the most prominent machine learning libraries include Scikit-learn, Theano, and TensorFlow.

Python is a useful language for creating Machine Learning models, and you can learn Python for Data Science online. If you want to learn Python for Data Science, take a look at this GemRain Data Science with Python course.

8. Deep Learning

Traditional Machine Learning has some drawbacks. Deep learning is a type of machine learning that trains a computer to perform tasks similar to those performed by humans, such as speech recognition, image recognition, and prediction. It improves the ability to categorize, recognize, detect, and characterize data using data. As a result of the recent excitement surrounding artificial intelligence, deep learning is gaining traction (AI).

Pytorch, Keras, and other prominent Deep Learning libraries should be familiar to data scientists.

AI & Machine Learning

9. Data Storytelling

The most successful way for using data to generate new knowledge and new decisions or actions is data storytelling. It is a multidisciplinary strategy that incorporates knowledge and skills from a range of disciplines, including communication, analysis, and design. It is used for a wide range of problems and is employed in various areas. Data storytelling is a crucial ability that all data scientists should possess.

This is a good way to start if you want to learn or organize group training for Data Storytelling.

You may watch a sneak peek of one of the topics for Building A Data Literate Culture In Your Organization here:

10. Big Data

Big Data is a data science application in which the data quantities are large, and managing them presents logistical challenges. The key problem is effectively collecting, storing, extracting, processing, and interpreting data from these huge data sets.

Due to physical and/or technical constraints, processing and analyzing these huge data collections is difficult or impossible due to physical and/or technical constraints. As a result, specific methods and tools (such as software, algorithms, and parallel programming) are required.

Big Data is a catch-all term for large data sets, specialized techniques, and customized instruments. It's widely used on large data sets to perform general data analysis, identify trends, and develop prediction models.

Hadoop, Hive, Spark, and other important big data tools are only a few examples

11. Ability to communicate

Effective communication is indeed a critical skill for data scientists. Being able to explain technical concepts and findings in a way that is understandable to a wide audience is essential for collaborating with other team members and for presenting the results of data analysis to stakeholders. Besides, in order to make sure that their solutions are applicable and simple to integrate into the business's current systems and procedures, data scientists must be able to interact closely with other team members, including those in IT, marketing, and sales.

12. Business know-how

Understanding a company's business is critical to moving forward with Data Science projects. Data scientists must thoroughly understand the company's main objectives and goals and how these affect their work. They must also be able to create solutions that meet those goals in a cost-effective, easy-to-implement, and universally accepted way.

Role and Responsibilities of a Data Scientist

On a daily basis, what does a data scientist do? Let's take a look at the function of the data scientist and the obligations that come with it.

The role of a data scientist is to extract insights and knowledge from data using a variety of techniques and tools from computer science, statistics, and domain expertise. Some of the specific responsibilities of a data scientist may include:

  • Collecting, cleaning, and processing data from various sources.

  • Developing and implementing statistical and machine learning models to analyze and interpret data.

  • Visualizing data and presenting findings to stakeholders.

  • Collaborating with cross-functional teams to understand business needs and develop data-driven solutions.

  • Communicating technical concepts and findings to a non-technical audience.

  • Staying up-to-date with the latest developments in the field of data science.

  • Machine learning and Deep Learning models are being trained and validated.

  • To achieve goals, collaborate with the business and IT departments.

  • Create a testing framework and execute A/B testing using data, comparing the outcomes of the A/B testing using their various data models.

  • Conduct an analytical investigation on existing data and present the findings in reports and organizational goals for the future.

The Difference Between Data Analyst and Data Scientist

Data Analyst vs Data Scientist

Data scientists and data analysts both work with data, but they have different roles and responsibilities.

A data analyst examines already-existing data, whereas a data scientist develops advanced methods for collecting and analyzing data that analysts can use.

Let's look at the fundamental distinctions between these two roles.

  • Work scope: While data analysts work on more specialized, specified problems, data scientists often work on more difficult, open-ended challenges. While data analysts may be more engaged in using current tools and techniques to examine data, data scientists may also be in charge of creating and executing statistical and machine learning models.

  • Skillsets: Data scientists typically have a more varied skill set, including an understanding of computer science, statistics, and specific domains. Data analysts could have more advanced knowledge of Excel and SQL.

  • Level of autonomy: Data scientists frequently operate more independently and can be in charge of developing their own initiatives and objectives. Data analysts have more clearly defined jobs and collaborate with others more closely to accomplish certain goals.

Responsibilities and Roles

A data scientist's role is to use strong business acumen and data visualization skills to translate knowledge into a business story. In contrast, a data analyst is not required to have strong business acumen or advanced data visualization capabilities.

A data scientist looks into and analyses data from various unrelated sources, whereas a data analyst often looks at data from a single source, such as a CRM system. A data analyst will respond to queries posed by the company, but a data scientist will create questions that are likely to benefit the company.

Data Analyst

Data Scientist

Data should be gathered from various databases and warehouses, then filtered and cleaned.

Ad hoc data mining is a technique used by data scientists to gather large amounts of organized and unstructured data from a number of sources.

Write complex SQL queries and scripts to gather, save, alter, and retrieve data from RDBMS such as MS SQL Server, Oracle DB, and MySQL.

Using a variety of statistical tools and data visualization approaches, create and evaluate complicated statistical models from vast volumes of data.

Utilize data analytics tools to understand new metrics better and find previously unknown areas of your organization.

Create AI models for problem-solving and task-solving.

Data analyst and data scientist are two in-demand employment categories. These are jobs that many students and working people want to pursue. People who want to start their analytics career should apply for a Data Analyst role. A Data Scientist profession is recommended for persons who want to build sophisticated machine learning models and use deep learning techniques to make human work easier.

Data scientists work for a variety of businesses. The majority of businesses are using data science to help them grow. Data scientists are in high demand in the IT industry and other sectors like FMCG, logistics, and more.

Data scientists are experts at sifting through data to spot patterns and programming and data modeling. In addition to data analyst jobs, they are experts in machine learning and can build novel techniques for visualizing data. They usually deal with issues in a variety of ways. They look at the data and ask questions to see if any issues need to be addressed.

A Profession of Infinite Possibilities

Companies in all major industries and sectors look to data scientists to help them analyze vast volumes of data for insightful information. The demand for highly qualified data scientists with experience in both business and IT is increasing.

Since data science is a relatively new occupation, the road to become one is not clearly defined. Only a handful of the data scientists fields include economists, mathematicians, statisticians, and computer scientists.


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Analytics & Data Management



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