What Are The Data Science Essentials? - Magnimind Academy

What Are The Data Science Essentials?


    Unquestionably, the job of a data scientist is paid very well and there’s an increasing demand for good data scientists. As a result, there’re lots of questions regarding what are the key skills required to become a data scientist. Truth be told, there isn’t any crystal-clear definition of a data scientist. In reality, finding a “good” data scientist is difficult. Note the use of “good” here which is used to highlight the fact that there can be people who may possess some of the skills related to data science but may not be the ideal fit in the role of a data scientist. And the irony is that even the employers looking to hire data scientists sometimes may not fully understand data science. There’re still some job advertisements that describe a business analyst role and a traditional data analyst role while marking it as a “data scientist” position. In this post, we’re going to help you out with regard to data science essentials, so that you can obtain the right skills to become a data scientist.

    With billions of devices connected to the web right now, a massive amount of data is being generated every single day. And millions of devices are predicted to join the league shortly, thus augmenting the production of such data to a higher level. Today, companies across industries are striving to leverage the data they capture from different sources to accomplish their business goals and they’re constantly looking for skilled data science professionals to help them do it. In addition, the role of a data scientist is considered as the 21st century’s hottest job by the HBR (Harvard Business Review). Unquestionably, a data science professional not only earns a fattier pay packet than professionals at similar levels in other fields but also experiences a huge growth prospect.

    The above facts should fascinate you whether you’re a fresher or a working professional. In both these scenarios, now is probably the best time to learn data science to take your career to the next level, irrespective of whether you’re looking to get your first job or trying to switch career or looking to climb the corporate ladder quickly.

    1- What is data science?

    essentials of data science

    Put simply, data science refers to the process of slicing through huge amounts of data, processing, and analyzing them to derive valuable insights that can help businesses take critical business decisions to complement their operations. Data science professionals need to have or develop a wide array of skills to work on data and extract information from it.

    If you want to be a part of this elite league of professionals, you don’t need to necessarily hold a Master’s degree or a Ph.D. degree. Rather, you’ve to have a robust understanding of the essentials of data science.

    2- Data science essentials that you need to master

    Put simply, data science refers to the process of capturing data, analyzing it, and obtaining actionable insights from it. The key demand of this profession is to have a lot of varied skills in order to become a coveted data scientist. Let’s have a look at them.

    2.1- Education

    The first element in this list of data science essentials is standard education, if not higher. You should note that a huge percentage of data scientists come with a Master’s degree and a significant percentage of them have Ph.Ds. Though there may be notable exceptions, usually a strong educational background is required to develop the required depth of knowledge necessary to become a good data scientist.

    So, ideally, you should have a Bachelor’s degree in statistics, mathematics, computer science etc. A majority of aspiring data scientists earn a Master’s degree or a Ph.D. after that apart from undertaking different online courses to develop special skills.

    2.2- Programming skills

    Programming skill is the second most important element among data science essentials. Regardless of the company or industry you’re interviewing for, you’re most likely going to be presumed to have a good understanding of one or more programming languages.

    Python is the most widely used programming language required for data scientist roles. Because of its versatility, Python is involved in almost every step of the data science processes. You’re also expected to have good knowledge of writing and executing complex queries in SQL (Structured Query Language).

    2.3- Statistical skills

    Good grasp of statistical skills is crucial for becoming a good data scientist. You must have an idea of statistical tests, distributions, and maximum likelihood estimators, among others. While the knowledge of statistics is essential regardless of the company type, it becomes extremely crucial for data-driven organizations where stakeholders rely on the support of data scientists to make business decisions.

    2.4- Machine learning

    No data science essential compilation can be complete without mentioning machine learning as one of its elements. Unfortunately, a significant percentage of data scientists aren’t proficient in machine learning techniques and areas like reinforcement learning, neural networks etc.

    If you want to be a true data scientist and stand out of the pack, you must know different machine learning techniques like decision trees, supervised machine learning, logistic regression etc. Having expertise in these skills will help you solve various data science problems, which in turn can help in the prediction of crucial organizational outcomes.

    2.5- Data visualization

    Data visualization is another key element of data science essentials. In reality, a huge amount of data is being generated by the business world, which needs to be translated into an easily consumable format. As a data scientist, you must have a solid understanding of how to visualize data using data visualization tools like Tableau, ggplot etc.

    These tools will help you translate complex results from the projects to a format, which will be easy to consume. Data visualization offers businesses the opportunity to directly work with data, grasp insights quickly, and act on new business opportunities to rise above the competition.

    2.6- Data wrangling

    Often known as data munging, data wrangling refers to the process of mapping and converting data from the form of a single raw data into different formats. Usually, the data analyzed by data scientists is quite challenging to work with and is messy in nature. Some of the imperfections often found in data include missing values, inconsistent string formatting etc.

    You need to understand that data is foundational to machine learning. So, if the data is dirty and/or contains unreliable or meaningless information, the algorithms will not be able to derive any valuable pattern. If the data isn’t cleaned as well as prepared the right way, the machine learning models may start making wrong decisions that can severely affect the business’s revenue. And that’s why data wrangling has been incorporated in this list of data science essentials.

    2.7- Robust business acumen

    Another crucial element that features on the list of data science essentials is having a robust understanding of the sector you’re working in to understand what business problems your organization is trying to solve. When it comes to data science, being able to discern problems that are crucial to solve for the progress of the business is immensely important.

    2.8- Excellent communication skills

    Communication skill is one of those data science essentials that can distinguish a good data scientist from an average one. As a data scientist, you need to have the ability to report your technical findings with the ultimate goal that they’re comprehensible to your non-specialized partners, who can be anything from members of the decision making team to those in the sales and/or marketing team. You must make the data-driven story convincing enough while communicating it properly to your audience.

    2.9- Critical thinking

    One of the most important essentials of data science is the ability of critical thinking. Data science professionals have to understand a business problem to be able to identify what is critical to solve that problem and what can be ignored. Critical thinking isn’t about analyzing things from a novice’s point of view, but actually being able to evaluate a situation or problem from multiple points of view.

    3- Some crucial things to keep in mind

    While the above ones are the effective elements that form a list of data science essentials, there’re some other things that you must keep in mind when you’re trying to develop these. Let’s have a look at the following thoughts.

    3.1- Become a master of fundamentals

    If you don’t have your fundamentals right, it’ll be almost impossible to become a good data scientist. From mathematics to statistics to programming language, and everything in-between – whatever skills you develop, gain a solid understanding of the basics at first.

    The frontline of this field is encountering new challenges on a regular basis and mastering only some high-end concepts isn’t going to give you a competitive edge. With just a handful of people who’re not willing to take the shortcuts, such investment to develop a robust foundation has become extremely critical.

    3.2- Earn expertise

    Try to become really good at what you’re doing. As a result, you’ll be able to establish a robust knowledge framework across domains. Though it’ll still take a lot of time and effort, the difficulty level will be lower when it comes to transferring the learning into an entirely new domain.

    Such transfer can go on as you hop across domains and your knowledge coverage will exponentially multiply. In order to reach that level, you must be an expert, which is an actually difficult task. Remember that great data scientists are able to handle almost any challenge. They’re fast learners and are excellent at mapping unrelated challenges into their own domain of expertise to resolve them with ease.


    3.3- Develop problem-solving skills

    This is something that you may not be able to develop even if you master all the elements mentioned in the above data science essential list. At their core, good data scientists are good problem solvers. You can solve a well-formed problem with ease because you can get plenty of training and you know how to do it.

    But if we ask you why you should solve the problem, giving the right answer may seem to like a challenge because there’re not many places that train you for it. In this scenario, self-exercise would probably be the best option. For example, you can pick a topic randomly once in a while and try to think of a solution in your own way. It’ll not only keep your mind active but nurture your problem-solving skills too while making you more curious.

    4- Wrapping up

    As an aspiring data scientist, you must try to develop all the skills mentioned in the above list of data science essentials. But even before you start your journey toward developing these skills, you should ask yourself whether you’ve got the right passion to become a data scientist. You need to understand that if you aren’t curious about data and/or aren’t passionate about business, it’ll become extremely difficult for you to accomplish your end goal of becoming a data scientist. Put simply, if your curiosity doesn’t interest you, probably no skill can help you succeed.

    If you want to be a good data science professional, your first priority needs to be the focus on mastering the above essentials of data science. Remember that companies try to find someone who has the ability to develop useful models, and the intelligence to deal with data processing apart from knowing how the models work, understanding the business problems clearly, and more.

    Once you’ve developed the above essentials of data science, your education shouldn’t end there. Keep on learning new technologies and tools, as and when you can. This’ll not only make you able to keep pace with industry trends, but will give your resume a boost as well. And whenever you’re learning something new, apart from the classroom learning, you should keep on practicing as much as you can to strengthen your understanding of the concepts.


    And finally, data science is a rapidly changing field and you’ve to adapt and improve constantly. That being said, you should remember that the crucial elements of a data science essential list today may change tomorrow. You’ve to be prepared to embrace uncertainty and that’s probably the biggest essence of embracing the role of a data scientist.



    .  .  .

    To learn more about data science, click here and read our another article.


    And finally, data science is a rapidly changing field and you’ve to adapt and improve constantly. That being said, you should remember that the crucial elements of a data science essential list today may change tomorrow. You’ve to be prepared to embrace uncertainty and that’s probably the biggest essence of embracing the role of a data scientist.



    .  .  .

    To learn more about data science, click here and read our another article.

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