Data cleaning courses can help you learn techniques for identifying and correcting errors in datasets, handling missing values, and standardizing data formats. You can build skills in data validation, outlier detection, and transforming raw data into a usable format. Many courses introduce tools like Python libraries such as Pandas and NumPy, as well as software like OpenRefine, that support executing data cleaning tasks efficiently and ensuring data quality for analysis.

Skills you'll gain: Open Source Technology, Package and Software Management, Linux, Ubuntu, Operating System Administration, Linux Administration, Linux Commands, Operating Systems, Unix, Command-Line Interface, File Systems, Linux Servers, Unix Commands, Network Administration, Red Hat Enterprise Linux, Bash (Scripting Language), Application Deployment, Shell Script, IT Automation, Web Applications
★ 4.7 (11) · Intermediate · Course · 1 - 3 Months

Board Infinity
Skills you'll gain: Restful API, ASP.NET, Microsoft SQL Servers, C# (Programming Language), Web Services, Database Management, Database Development, JSON, Back-End Web Development, SQL, Database Design, Server Side, .NET Framework, Object Oriented Programming (OOP), Application Programming Interface (API), API Design, Database Architecture and Administration, Programming Principles
★ 4.1 (14) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Knowledge of Apple Software, User Accounts, Knowledge of Apple Hardware, User Provisioning, Identity and Access Management, AI literacy, Wireless Networks, Authentications, Key Management, Data Sharing
Intermediate · Course · 3 - 6 Months

LearnKartS
Skills you'll gain: Salesforce Development, Salesforce, User Accounts, User Provisioning, No-Code Development, Customer Relationship Management (CRM) Software, Application Development, Application Design, User Interface (UI), Cloud Technologies
★ 4.9 (8) · Beginner · Course · 1 - 4 Weeks

Peking University
Skills you'll gain: Surveys, Survey Creation, Interviewing Skills, Statistical Analysis, Research Methodologies, Research, Science and Research, Data Cleansing, Data Collection, Research Design, Scientific Methods, Social Sciences, Case Studies, Qualitative Research, Research Reports, Report Writing
★ 4.9 (25) · Mixed · Course · 1 - 3 Months

LearnKartS
Skills you'll gain: Salesforce, Authentications, Salesforce Development, Data Access, Role-Based Access Control (RBAC), Enterprise Security, Identity and Access Management, Security Controls, Data Security, Authorization (Computing), Event Monitoring, Application Security, Data Sharing, Responsive Web Design, User Accounts, Customer Relationship Management (CRM) Software, User Interface (UI)
Intermediate · Course · 1 - 4 Weeks
École Polytechnique Fédérale de Lausanne
Skills you'll gain: Scala Programming, Functional Design, Programming Principles, Event-Driven Programming, Software Design Patterns, Data Structures, Simulations
★ 4.6 (11) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Node.JS, Restful API, API Design, Server Side, Application Programming Interface (API), Back-End Web Development, Microsoft Visual Studio, Web Applications, Javascript, Application Development, Integrated Development Environments
★ 4.7 (6) · Intermediate · Guided Project · Less Than 2 Hours

Duke University
Skills you'll gain: Object Oriented Programming (OOP), Java, File I/O, Algorithms, Java Programming, Object Oriented Design, Data Structures, Encryption, Computer Programming, Software Engineering, Cryptography, Data Store, File Management, Data Import/Export, Web Applications
Beginner · Course · 1 - 3 Months

Skills you'll gain: Data Lakes, Data Governance, Operational Databases, Metadata Management, Google Cloud Platform, Data Management, Data Architecture, Data Warehousing, Advanced Analytics, Cloud Storage, Data Integration, Analytics, Applied Machine Learning, Open Source Technology
★ 4.8 (11) · Intermediate · Course · 1 - 3 Months

University of Illinois Urbana-Champaign
Skills you'll gain: Sampling (Statistics), Descriptive Statistics, Data Analysis, Statistics, Quantitative Research, Statistical Analysis, Statistical Reporting, Data-Driven Decision-Making, Statistical Visualization, Probability & Statistics, Statistical Methods, Statistical Inference, Data Visualization, Microsoft Excel, Probability Distribution, Data Presentation, Data Collection, Influencing
Beginner · Course · 1 - 3 Months
Skills you'll gain: Model Evaluation, Model Deployment, Model Training, Decision Tree Learning, Data Preprocessing, Java Programming, Classification Algorithms, Predictive Modeling, Random Forest Algorithm, Applied Machine Learning, Java, Program Evaluation, Machine Learning Methods, Machine Learning Algorithms, Machine Learning, Algorithms, Program Implementation, Business Development
Advanced · Course · 1 - 4 Weeks