Whether you’re a beginner or a more advanced data scientist, finding the right data science project is crucial to improving your skills and mastering algorithms. There are a couple of ways to achieve this: 1) by solving a problem statement that you found intriguing, and 2) by delving into some of the free, popular datasets available online.
The main obstacle is selecting the right dataset for a specific problem statement. There is a wide range of available datasets of varying difficulty levels with different functions. This can make it difficult to settle on the right project, leaving you with no bandwidth to immerse yourself in the fun part – solving the problem!
In this article, we’re discussing customer churn, an essential success metric for businesses in every industry and a favorite problem for data scientists. We’ve scoured the internet for different kinds of customer churn datasets to highlight our favorites in order of difficulty.
Customer churn is the percentage of customers who stopped using a company’s product or service during a specified time period. For example, if a company starts its quarter with 400 customers and ends with 380, its quarterly churn rate is 5%.
This is a vital metric because retaining existing customers is more cost-effective than acquiring new ones. Churn can occur due to various reasons, including unsatisfactory service, competing products, changing customer needs, and a lack of engagement.
Companies need data scientists and business analysts to analyze customer data to identify patterns and factors contributing to churn. Through data collection, exploratory data analysis (EDA), and predictive modeling, data scientists and analysts help implement targeted strategies to retain customers, enhance consumer satisfaction, and maintain sustainable growth.
Here are the steps to conduct an impactful churn analysis study:
The Telco customer churn data contains information about a company that provides phone and Internet services to over 7000 customers in California. It indicates which customers have left, stayed, or signed up for their service. Multiple important demographics are included for each customer, as well as a Satisfaction Score, Churn Score, and Customer Lifetime Value (CLTV) index.
One of the most popular churn datasets to work on, this dataset from IBM is designed to help you practice analyzing customer behavior and developing targeted retention programs, with a focus on understanding which factors influence customer churn.
This bank’s customer data contains information about a hypothetical European-based bank that has provided a dataset of almost 3,000 customers. This includes customer demographics and bank details, like credit score and the number of bank services they use.
A travel company wants to predict whether its customers will churn based on indicators like age, frequent flyer information, annual income, and services used. You can utilize this free Kaggle dataset to build a predictive model using ANN, random forest, or whatever algorithm you consider most suited to the problem statement.
The data set belongs to an e-commerce company that wants to know which customers are going to churn so they can better tailor promotional campaigns. This is a common type of data science problem.
The data file has 20 columns and over 5000 rows with detailed information about customer demographics and online behavior.
Tip: Perform a thorough exploratory analysis of the provided data to gain insights into customer behavior. This includes analyzing patterns and trends in variables.
This is another dataset created by IBM data scientists. You’re given employee data, including demographics, performance metrics, and attrition.
Although this is an employee dataset instead of a customer one, it can be very useful to try to solve a typical HR analytics problem statement. The dataset is rich with information, with various factors ranging from home-work travel distance to the number of jobs the employee has had.
This will allow you to dissect the project in multiple ways, create a multivariate analysis, and have a deeper understanding of the recommendations you may be expected to provide in a similar project.
With the rapid development of telecommunications, service providers are facing competitive consumer markets. Questions about these scenarios can be applied to the real-world business problems asked in interviews, so practicing multiple projects with advanced analytics in the telecom domain will help prepare you.
The given dataset contains customer-level information for a telecom company. Service information is recorded for each customer, primarily related to their usage stats. You’ll need to segment customers, analyze each segment separately, and understand their pain points and reasons for attrition.
Tip: Use a heatmap to visualize the correlation between customer demographics and usage numbers.
In a world where SaaS and streaming services heavily prioritize analytics, experience with analyzing customer churn on subscription-based services is key to acing many job interviews. You need to understand the business and its revenue model, the customer journey, and the buyer persona well to tackle this complex problem.
This dataset contains anonymized information about customer subscriptions and their interaction with the service. This includes various features, such as subscription type, payment method, viewing preferences, customer support interactions, and other relevant attributes.
This is another telecom churn dataset, with columns detailing customer behavior, usage, and statistics. You can use techniques like ANOVA to conduct a multivariate analysis and implement modeling algorithms, such as the decision tree or random forest, to predict whether a customer will likely churn.
This problem statement is similar to the telecom provider example. Internet service providers face fierce competition, so optimizing customer attrition is key to increasing their margins.
The provided dataset belongs to an unknown internet service provider and contains information from over 70,000 unique customers, including their internet usage, subscription age, number of service failures, and additional services used.
You can use a logistic regression model to solve the problem but remember to keep the business context in mind. For instance, retention surveys have shown that while price and product are important, most customers churn because of service failures and dissatisfaction with the customer care team.
Managing credit card churn is essential for banks. Customers who frequently open and close credit card accounts may present a higher risk, indicating financial instability and an increased likelihood of defaulting.
Banks prefer to manage a lower-risk customer base to maintain the overall health of their credit card portfolios. This helps them project revenue with better accuracy and meet regulatory compliance guidelines.
The dataset contains credit card information from 10,000 anonymous customers that provides a detailed overview of their demographics, background, and financial health. With over 18 features provided, this is a fascinating case study to practice with.
This is an open-source dataset created by the Teradata Center at Duke University. The Cell2Cell dataset is pre-processed and contains over 70,000 instances and 58 attributes. It can be used to understand subscriber churn. Some interesting questions to explore while solving this problem are:
This is an interesting dataset that was part of the HackerEarth ML Challenge. It poses a more advanced churn problem, where instead of assigning a binary churn prediction score, you’re expected to assign a churn risk score between 1 and 5. This will help the company create targeted retention plans and prioritize customer cohorts by their churn risk.
Tip: An important part of your data preparation should be outlier analysis while segmenting the customer groups by churn risk.
E-commerce businesses rely on repeat customers for sustained revenue. By reducing churn, these companies can increase customer lifetime value and overall revenue. This often involves optimizing customer service, personalizing marketing and promotions, and improving website navigation.
The dataset provides a detailed overview of customer interactions with the site.
Try to address the following questions:
Aside from full-fledged machine learning problems, there are a few categories of churn analysis questions that are commonly asked in data science interviews. Here are some examples that you can practice with on the Interview Query platform:
Ultimately, analyzing customer churn comes down to practice and selecting the right problems and datasets to try. Having a solid understanding of the specific industry while conducting churn analysis is crucial to implementing effective real-world solutions. After all, reducing churn is not just about retaining customers– it’s about building enduring relationships based on trust, value, and exceptional service. To provide value, it is imperative to know both the business and its customers well.
Other sources of open-source data science datasets include the UCI Machine Learning Repository, GitHub, Data.gov, and Google Dataset Search. You can also refer to our ultimate guide to data science projects for more case studies to get your hands on.