Data Science: What It Is and How to Get Started

Data science is one of the most exciting and rapidly growing fields today. But what exactly is data science in Malaysia? And how do you get started in this field? In this blog post, we will answer these questions and more. We will discuss what data science is, the life cycle within the field, and some of the skills you need to be successful.

What is Data Science?

Data science is a branch of computer science that deals with the processing, organization, and analysis of large data sets. It encompasses a wide range of activities, from cleaning and managing data to developing algorithms and statistical models for learning from data. Data scientists use their skills to solve real-world problems in areas such as weather prediction, recommendation systems, and fraud detection. As the amount of data produced by our society continues to grow at an astonishing rate, data science will become increasingly important in our ability to make sense of it all. With the help of data science, we can uncover hidden patterns and trends, obtain insights into complex phenomena, and make better decisions about the world around us.

Data Science Lifecycle

The data science process can be divided into five main phases:


One of the most important stages of data processing is the “Capture” stage. This is where raw data is gathered from various sources and converted into a format that can be further processed. The type of data that is collected in the capture stage can vary widely, but it typically includes structured data, such as databases and spreadsheets, as well as unstructured data, such as text documents and images. The goal of the capture stage is to collect all of the relevant data so that it can be processed further. In many cases, the capture stage also includes cleaning and formatting the data so that it is ready for use. Once the data has been collected and formatted, it can then be used for a variety of purposes, such as analytics, decision-making, and reporting.


The data collected during the previous stage is useless if it can’t be put into a form that can be used. This is where the “Maintain” stage comes in. This stage covers taking the raw data and putting it into a form that can be used. This usually involves sorting and filtering the data, as well as converting it into a format that can be read by humans. In some cases, the data may also need to be cleaned up before it can be used. For example, if there are errors in the data, they will need to be corrected. Once the data is in a usable form, it can then be analyzed and used to make decisions. Without this crucial step, the data would simply be sitting around collecting dust.


The “Process” stage is where the data is actually analyzed. This usually involves using statistical techniques to find patterns and trends in the data. Data scientists will also develop algorithms and models that can be used to make predictions about future events. In some cases, the process stage may also involve cleaning or Wrangling the data, which is the process of getting the data into a form that can be more easily analyzed. Once the data has been processed, it is then ready to be visualized in order to communicate the findings to others.


The “Visualize” stage is where the data is represented in a way that can be understood by humans. This usually involves creating charts and graphs that show the results of the analysis. The goal of this stage is to take the complex data that has been collected and distill it into a form that is easy to understand. This can be helpful in identifying patterns and trends that would otherwise be difficult to see. In many cases, the results of the visualization stage can be used to generate hypotheses about how the system works. From there, further analysis can be done to validate or invalidate those hypotheses. Ultimately, the “Visualize” stage is essential for making sense of data and understanding how a system works.


The “Communicate” stage is where the findings of the data science process are shared with others. This can be done through presentations, reports, or even just conversations. The goal of this stage is to make sure that the results of the data science process are understood and used by the people who need them. This can be a challenge, as data science often produces complex results that can be difficult to explain to non-experts. However, it is essential to ensure that the findings are communicated effectively. This is because they can have a major impact on business decisions and operations. There are many different ways to communicate the results of a data science project. It is important to choose the right approach for each situation.

Prerequisites for Data Science

Now that we’ve covered what data science is and how it works, let’s talk about what you need in order to get started. Data science is a complex field, and there are a lot of different skills and knowledge required in order to be successful. However, there are some basic prerequisites that everyone should have before they start their journey into data science.


First, you need to have a strong foundation in mathematics. This includes topics like algebra, calculus, and statistics. While you don’t need to be a math genius, it is important to have a strong understanding of the basics. Without this foundation, it will be very difficult to understand the more advanced concepts used in data science.


Second, you need to have some programming experience. Data science relies heavily on computers, and you will need to know how to write code in order to work with data. There are many different programming languages that can be used for data science. However, some of the most popular ones include Python, R, and Java. It is not necessary to be an expert programmer, but you should have a basic understanding of how to write code.

Working with Data

Third, you need to have some experience working with data. This can be gained through personal projects, online courses, or even just playing around with data sets. The more experience you have working with data, the better prepared you will be to tackle real-world data science problems.

Final Thought

Data science is a complex and rapidly growing field. However, there are some basic prerequisites that everyone should have before they start their journey into data science. By having a strong foundation in mathematics and programming, as well as some experience working with data, you will be well on your way to becoming a successful data scientist. Thanks for reading!

This article is posted on Blog Ogle.

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