What Does a Data Analyst Do?


What Does a Data Analyst Do?

A Data Analyst is a professional who gathers, interprets, and processes data to extract meaningful insights that can guide business strategies. They are the bridge between raw data and actionable recommendations. 

What is a Data Analyst?

The role of a Data Analyst has become increasingly vital for organisations seeking to make informed decisions based on the wealth of data at their disposal. From deciphering trends to providing actionable insights, data analysts play a pivotal role in transforming raw data into valuable information. 

What does a data analyst do?

Data Analysts work across various industries, including finance, marketing, healthcare, and technology. Their tasks include:

  • Data Collection
  • Data Cleaning
  • Data Analysis
  • Data Visualisation
  • Insights Generation
  • Reporting
  • Predictive Analysis

Data Collection

Gathering data from different sources, such as databases, spreadsheets, and online platforms.

Data Cleaning

Ensuring data accuracy by identifying and rectifying errors, missing values, and inconsistencies.

Data Analysis

Employing statistical techniques to identify patterns, trends, and correlations within the data.

Data Visualisation

Creating visually engaging charts, graphs, and dashboards to communicate findings to stakeholders effectively.  

Insights Generation

Translating data insights into actionable recommendations that can drive business decisions.  


Preparing regular reports highlighting key performance indicators and trends.  

Predictive Analysis

Predictive analysis uses historical data to predict future trends and outcomes.

Data Analyst Skills

Becoming a Data Analyst is an exciting journey that combines technical skills, analytical thinking, and a passion for problem-solving. While there are multiple paths to this career, here are some skills that you will need:

Technical Skills

Proficiency in programming languages is essential for a Data Analyst. Python and R are two of this field’s most widely used languages. They allow analysts to manipulate data, perform complex calculations, and create data visualisations.

Statistical Knowledge

A strong understanding of statistics is crucial for interpreting data and drawing accurate conclusions. Concepts like probability, hypothesis testing, and regression analysis are integral to the role.

Data Manipulation and Visualisation Tools

Familiarity with tools like Excel, SQL (Structured Query Language), and data visualisation platforms (e.g., Tableau, Power BI) is invaluable for data manipulation and creating visual representations of insights.

Problem-Solving Mindset

Data Analysts are essentially problem solvers. Developing critical thinking skills and the ability to approach complex issues with a structured methodology is essential.

Continuous Learning

The field of data analysis is ever-evolving. Keeping up with the latest trends, techniques, and tools is crucial to stay competitive and relevant in the industry.

Data Analyst Responsibilities

The responsibilities of a Data Analyst encompass a wide spectrum of tasks that contribute to deciphering data’s underlying narratives and supporting informed decision-making. These professionals are entrusted with collecting, organising, and cleaning raw data from various sources. They wield their analytical skills to uncover patterns, trends, and correlations within the data, extracting valuable insights that can shape business strategies. 

Data Analysts are also adept at translating complex data findings into easy-to-understand visualisations – charts, graphs, and dashboards – which are powerful tools for conveying information to stakeholders. Moreover, they play a critical role in generating actionable recommendations based on their analyses, thereby guiding companies to make strategic choices that maximise their potential for success. 

From predictive analysis, which foretells future trends, to day-to-day reporting of key performance indicators, Data Analysts are the gatekeepers of data-driven insights that drive growth and innovation across industries.

The Importance of Coding Skills for Data Analysts

In the realm of data analysis, coding is a superpower. While not all Data Analysts are hardcore programmers, coding skills significantly enhance your capabilities. Coding enables you to manipulate, clean, and process data efficiently. It empowers you to create custom analyses and develop automated workflows. Here are some languages that are particularly important for Data Analysts:

  • Python
  • R
  • SQL


Renowned for its readability and versatility, Python is widely used for data manipulation, analysis, and visualisation. Libraries like pandas, NumPy, and Matplotlib are essential tools for any Data Analyst.


Specifically designed for statistical analysis and data visualisation, statisticians and analysts use R for its rich ecosystem of packages dedicated to data science.


Structured Query Language is a fundamental tool for working with databases. Proficiency in SQL allows Data Analysts to extract, transform, and manipulate data stored in relational databases.

Embrace the Data-Driven Future

As the world continues to embrace the data-driven future, the role of a Data Analyst remains pivotal across industries. The ability to transform raw data into actionable insights has become a sought-after skill set. With the right education, technical prowess, and problem-solving mindset, you can embark on a rewarding journey as a Data Analyst where the challenges are exciting and the potential for growth is boundless. 

So, if you’re eager to uncover hidden trends and drive impactful decisions, consider stepping into the dynamic world of data analysis. Your next career move might just be your best one yet!

Learn with Code Institute

If you’re ready to dive into data analysis and develop the coding skills essential for success, consider exploring Code Institute’s comprehensive Full Stack Software Development programme. This course equips you with the necessary coding prowess and introduces you to the powerhouses of data analysis: Python and SQL. Throughout the program, you’ll delve into Python’s versatility and its role in data manipulation, analysis, and visualisation while meeting SQL to work with databases effectively. 

But that’s not all – Code Institute’s forward-thinking approach also offers a specialised major in predictive analytics as part of the course’s final project. This means you’ll have the chance to apply your coding skills to real-world scenarios, harnessing predictive analytics to make informed decisions based on data-driven insights. With Code Institute, your journey to becoming a skilled Data Analyst is not just about learning to code but mastering the tools that empower you to unravel the stories hidden within the data.

If you want to sample how our course works, sign up for our free 5 Day Coding Challenge. There, you will learn the basics of HTML, CSS and JavaScript. After one hour a day over five days, you’ll build your first web page. Register through the form below.

How Much Do Data Analysts Earn?

The role of a data analyst has become increasingly essential across various industries. As companies seek to make informed decisions based on data insights, the demand for skilled data analysts has surged, prompting the question: How much do data analysts earn? If you’re considering a career in data analysis, this blog will provide you with […]

What is an Android Developer?

An Android developer is responsible for creating and maintaining applications for the Android operating system. These developers use programming languages like JavaScript, Java, Kotlin, and others to design and build mobile apps that run seamlessly on various Android devices, from smartphones to tablets. They collaborate with designers, product managers, and other team members to craft […]

What is a Blockchain Developer? 

Blockchain technology has garnered significant attention, as have blockchain developers. In this article, we look at the role of the blockchain developer and explain what it is that they do.  What is a Blockchain Developer? Blockchain developers are the architects who build the digital foundations that underpin cryptocurrencies, smart contracts, decentralised applications (DApps), and more. […]