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.

Arizona State University
Skills you'll gain: Data Storytelling, Data Presentation, Analytical Skills, Data Analysis, Business Research, Data Literacy, Analysis, Critical Thinking, Data Strategy, Data-Driven Decision-Making, Presentations, Problem Solving, Persuasive Communication
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: PostgreSQL, Data Maintenance, Performance Tuning, Database Architecture and Administration, Data Migration, Relational Databases, Data Management, Data Persistence, SQL, Data Integrity, Database Management, Disaster Recovery, Transaction Processing, System Monitoring
Advanced · Course · 1 - 3 Months

Skills you'll gain: Database Design, IBM DB2, Relational Databases, Database Systems, Database Development, Databases, Database Management, PostgreSQL, MySQL, Database Administration, Database Software, SQL, Database Management Systems, Database Architecture and Administration, Data Modeling, Data Import/Export, Data Integrity, Command-Line Interface
★ 4.6 (787) · Beginner · Course · 1 - 4 Weeks

Stanford University
Skills you'll gain: Algorithms, Graph Theory, Data Structures, Theoretical Computer Science, Computational Thinking, Mathematical Theory & Analysis, Analysis, Computer Science, Probability & Statistics, Probability, Design Strategies
★ 4.8 (5.3K) · Intermediate · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: Email Automation, Workflow Management, Agentic Workflows, AI Workflows, No-Code Development, Deepseek, LLM Application, Generative AI Agents, Large Language Modeling, Generative AI, Automation, Application Deployment, AI Integrations, Google Sheets, Context Management, Gmail, Software Installation
★ 4 (47) · Beginner · Course · 1 - 4 Weeks

Kennesaw State University
Skills you'll gain: Statistical Process Controls, Statistical Hypothesis Testing, Process Capability, Team Management, Team Performance Management, Quality Improvement, Root Cause Analysis, Six Sigma Methodology, Lean Six Sigma, Lean Methodologies, Team Building, Exploratory Data Analysis, Process Improvement, Quality Control, Probability & Statistics, Probability Distribution, Process Improvement and Optimization, Statistical Methods, Process Analysis, Data Literacy
★ 4.7 (4.8K) · Intermediate · Specialization · 3 - 6 Months
Universidade de São Paulo
Skills you'll gain: Conversion Funnel Analysis, Search Engine Marketing, Digital Marketing, Email Marketing, Digital Marketing Campaigns, Google Ads, Marketing Strategies, Search Engine Optimization, Google Analytics, Online Advertising, A/B Testing, Pay Per Click Advertising, Marketing Planning, Advertising Campaigns, Web Analytics, Digital Advertising, Facebook, Campaign Management, Marketing Analytics
★ 4.7 (2.3K) · Beginner · Course · 1 - 3 Months

University of Illinois Urbana-Champaign
Skills you'll gain: Geospatial Information and Technology, Geographic Information Systems, Apache Hadoop, Spatial Data Analysis, Geospatial Mapping, Spatial Analysis, Big Data, Matplotlib, Data Processing, Computational Thinking, Distributed Computing, Data Manipulation, Theoretical Computer Science, Python Programming
★ 4.2 (30) · Beginner · Course · 1 - 3 Months

Universidade de São Paulo
Skills you'll gain: Network Analysis, Social Network Analysis, Data Visualization, Scientific Visualization, Network Model, Graphing, Graph Theory, Exploratory Data Analysis, Environmental Science, R (Software), Data Analysis, R Programming, Data Science, Data Processing
★ 5 (37) · Beginner · Course · 1 - 4 Weeks

University of London
Skills you'll gain: Pandas (Python Package), NumPy, Probability & Statistics, Unsupervised Learning, Applied Machine Learning, Statistical Methods, Data Science, Statistics, Data Analysis, Statistical Analysis, Jupyter, Data Manipulation, Machine Learning Algorithms, Descriptive Statistics, Plot (Graphics), Data Processing, Data Visualization Software, Python Programming, Machine Learning
★ 4.5 (22) · Beginner · Course · 1 - 4 Weeks

Fundação Instituto de Administração
Skills you'll gain: Big Data, R (Software), Data Mining, Data-Driven Decision-Making, Data Visualization, Data Strategy, FinTech, Data Engineering, Data Visualization Software, Plot (Graphics), Deep Learning, Statistical Visualization, Machine Learning Methods, R Programming, Predictive Analytics, Analytics, Applied Machine Learning, Financial Market, Data Analysis, Digital Transformation
★ 4.3 (91) · Beginner · Specialization · 1 - 3 Months

KodeKloud
Skills you'll gain: Rust (Programming Language), Unit Testing, Development Testing, Continuous Integration, Network Protocols, TCP/IP, System Programming, C and C++, Integration Testing, Web Applications, Memory Management, Data Structures, Functional Design
Advanced · Course · 1 - 3 Months