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.

Illinois Tech
Skills you'll gain: Machine Learning Algorithms, Model Evaluation, Statistical Analysis, Bayesian Statistics, Data Visualization, Statistical Inference, Exploratory Data Analysis, Statistical Methods, Data Presentation, Analysis, Probability & Statistics, Data Cleansing, Applied Machine Learning, Regression Analysis, Analytics, Statistical Programming, Data Analysis, Logistic Regression, R Programming, Verification And Validation
★ 4.5 (49) · Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Pandas (Python Package), NumPy, Data Wrangling, Data Transformation, Data Manipulation, Data Processing, Pivot Tables And Charts, Data Analysis Software, Data Preprocessing, Data Cleansing, Data Analysis, Numerical Analysis, Statistical Analysis, Data Structures, Descriptive Statistics
★ 5 (9) · Mixed · Course · 1 - 4 Weeks

University of Michigan
Skills you'll gain: Unsupervised Learning, Data Mining, Social Network Analysis, ChatGPT, Embeddings, LLM Application, Applied Machine Learning, Data Quality, Unstructured Data, Anomaly Detection, Machine Learning Methods, Data Science, Supervised Learning, Machine Learning, Data Preprocessing, Data Analysis, Social Media Analytics, Data Manipulation, Python Programming, Exploratory Data Analysis
★ 4.5 (19) · Advanced · Specialization · 3 - 6 Months

Logical Operations
Skills you'll gain: Power BI, Data Analysis Expressions (DAX), Dashboard Creation, Business Reporting, Data Transformation, Business Intelligence, Data Visualization Software, Business Intelligence Software, Dashboard, Data Analysis, Microsoft Excel, Data Visualization, Data Cleansing, Data Modeling, Data Analysis Software, Microsoft PowerPoint, Microsoft 365, Microsoft Office, Collaboration, Data Import/Export
★ 4.7 (15) · Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Data Warehousing, IBM Cognos Analytics, Extract, Transform, Load, Database Architecture and Administration, Data Visualization, Database Design, Dashboard Creation, Data Modeling, MySQL, Business Intelligence, Database Management, Data Architecture, Data Visualization Software, Data Pipelines, PostgreSQL, Shell Script, Data Transformation, Business Metrics
★ 4.8 (28) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Matplotlib, Data Storytelling, Data Presentation, Data Visualization, Plot (Graphics), Scientific Visualization, Data Visualization Software, Image Quality, Software Installation
★ 4.3 (16) · Mixed · Course · 1 - 4 Weeks

Maven Analytics
Skills you'll gain: Prompt Engineering, Generative AI, Google Gemini, ChatGPT, Data Analysis Expressions (DAX), Power BI, Deep Learning, Excel Formulas, Analytics, Google Sheets, AI literacy, Microsoft Excel, Artificial Intelligence, Data Analysis, Python Programming, SQL, Business Intelligence, Data Science, Debugging
★ 4.8 (22) · Beginner · Course · 1 - 3 Months

Fractal Analytics
Skills you'll gain: Generative AI, Generative AI Agents, Retrieval-Augmented Generation, Enterprise Architecture, Metadata Management, Data Science, Machine Learning
★ 4.9 (7) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Power BI, Interactive Data Visualization, Data Visualization, Dashboard Creation, Data Presentation, Dashboard, Trend Analysis, Exploratory Data Analysis, Customer Analysis, Data Visualization Software, Tree Maps, Sales, Business Intelligence, Data Analysis, Business Analytics, Data Transformation
★ 4.7 (41) · Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: GIS Software, Model Evaluation, Geographic Information Systems, Extract, Transform, Load, Spatial Analysis, Spatial Data Analysis, Geospatial Mapping, Data Pipelines, Geospatial Information and Technology, Apache Airflow, Geostatistics, Interactive Data Visualization, Cloud Computing, Leaflet (Software), Google Cloud Platform, Environmental Monitoring, Model Training, Graphic and Visual Design, Pandas (Python Package), Python Programming
Beginner · Specialization · 3 - 6 Months

University of Michigan
Skills you'll gain: NumPy, Debugging, Pandas (Python Package), Statistics, Correlation Analysis, Data Analysis, Statistical Programming, Descriptive Statistics, Exploratory Data Analysis, Data Wrangling, Data Preprocessing, LLM Application, Data-oriented programming, Code Reusability, Data Transformation, Numerical Analysis, Critical Thinking, Functional Design
★ 4.3 (19) · Intermediate · Specialization · 3 - 6 Months

LearnQuest
Skills you'll gain: Data Visualization, Data Persistence, Big Data, Analytics, Data Processing, Data Storage Technologies, Data Strategy, Data Storage, Data Integrity, Data Management, Data Infrastructure, Unstructured Data, Data Import/Export, Real Time Data, Data Collection
★ 3.9 (31) · Mixed · Course · 1 - 4 Weeks