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.

University of Colorado Boulder
Skills you'll gain: Data Visualization, Data Visualization Software, Interactive Data Visualization, Visualization (Computer Graphics), User Centered Design, Data Presentation, Usability, Human Centered Design, Data Storytelling, Design Research, User Research, Graphic and Visual Design, Usability Testing, Quantitative Research, Design Elements And Principles
★ 4.7 (43) · Intermediate · Course · 1 - 4 Weeks

LearnQuest
Skills you'll gain: Data Analysis, Analytics, Data Analysis Software, Statistical Analysis, Statistical Programming, Spreadsheet Software, Analytical Skills, Exploratory Data Analysis, Descriptive Analytics, Data Cleansing, Statistical Methods, Data Collection, Advanced Analytics, Statistics, R (Software), Predictive Analytics, Query Languages, Data Visualization, Data Visualization Software
★ 3.5 (34) · Beginner · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Probability, Statistical Hypothesis Testing, Statistical Inference, Probability & Statistics, Statistical Methods, Probability Distribution, Statistics, Bayesian Statistics, Statistical Analysis, Sampling (Statistics), Applied Mathematics, Data Ethics, Data Analysis, Correlation Analysis, Data Science, Sample Size Determination, Artificial Intelligence
★ 4.4 (360) · Intermediate · Specialization · 3 - 6 Months

Universidad Nacional Autónoma de México
Skills you'll gain: Data Mining, Database Design, Scalability, Database Systems, Relational Databases, Unstructured Data, Transaction Processing, Database Architecture and Administration, Systems Design, Database Software, Big Data, Database Development, Data Architecture, NoSQL, Data Processing, Maintainability, Apache Hadoop
★ 4.3 (40) · Intermediate · Course · 1 - 4 Weeks

University of California San Diego
Skills you'll gain: Unit Testing, Data Structures, Java, Java Programming, Software Testing, Program Development, Performance Tuning, Algorithms, Performance Testing, Object Oriented Programming (OOP), Theoretical Computer Science
★ 4.8 (2.3K) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Prompt Engineering, Prompt Patterns, ChatGPT, Generative AI, Generative Model Architectures, Database Design, Data Pipelines, Query Languages, Extract, Transform, Load, Responsible AI, AI literacy, Data Warehousing, Data Ethics, Data Infrastructure, Data Architecture, Data Mining, Data Synthesis, Artificial Intelligence and Machine Learning (AI/ML), Augmented and Virtual Reality (AR/VR), Data Analysis
★ 4.7 (12K) · Intermediate · Specialization · 1 - 3 Months

Board Infinity
Skills you'll gain: Data Visualization Software, Dashboard, Dashboard Creation, Data Visualization, Interactive Data Visualization, Data Transformation, Data Presentation, Tableau Software, Data Storytelling, Data Manipulation, Exploratory Data Analysis, Data Analysis
★ 3.8 (15) · Beginner · Course · 1 - 4 Weeks

Yonsei University
Skills you'll gain: Spatial Data Analysis, Spatial Analysis, Geospatial Information and Technology, Geographic Information Systems, Geospatial Mapping, GIS Software, Database Management Systems, Big Data, Database Systems, Apache Hadoop, Data Modeling, PostgreSQL, Network Analysis
★ 4.5 (532) · Intermediate · Course · 1 - 3 Months

University of Glasgow
Skills you'll gain: Data Literacy, Data-Driven Decision-Making, Case Studies, Strategic Decision-Making, Data Strategy, Leadership Studies, Decision Making, Data Quality, Business Leadership, Crisis Management, Critical Thinking, Leadership, Organizational Effectiveness, Digital Analysis, Business Transformation, Storytelling, Leadership Development, Agile Methodology, Strategic Leadership, Leadership and Management
★ 4.7 (152) · Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: Data Modeling, Power BI, Data Wrangling, Data Manipulation, Database Design, Data Transformation, Dashboard, Data Integration, Star Schema, Relational Databases, Data Cleansing, Data Processing
Beginner · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Matplotlib, Web Scraping, Pivot Tables And Charts, Pandas (Python Package), Data Integration, Statistical Visualization, Data Manipulation, Exploratory Data Analysis, Data Wrangling, Data Visualization, Data-Driven Decision-Making, Data Transformation, Data Presentation, Data Processing, Data Cleansing, Data Preprocessing, Statistical Analysis, Seaborn, NumPy, Python Programming
★ 4.5 (40) · Beginner · Specialization · 3 - 6 Months

MathWorks
Skills you'll gain: Data Storytelling, Model Evaluation, Feature Engineering, Data Visualization, Plot (Graphics), Supervised Learning, Dimensionality Reduction, Data Presentation, Data Integration, Scientific Visualization, Statistical Visualization, Data Preprocessing, Interactive Data Visualization, Exploratory Data Analysis, Data Import/Export, Classification Algorithms, Model Training, Technical Communication, Data Analysis, Machine Learning Methods
★ 4.8 (1.1K) · Beginner · Specialization · 3 - 6 Months