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: Data Mining, Innovation, Image Analysis, Big Data, Medical Imaging, Unstructured Data, Health Informatics, Analytics, Text Mining, Natural Language Processing, Health Care, Health Information Management, Medical Terminology, Interoperability, Classification Algorithms
★ 3.6 (26) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Excel Formulas, Microsoft Excel, Pivot Tables And Charts, Spreadsheet Software, Data Analysis, Data Synthesis, Data Transformation, Data Cleansing, Data Manipulation, Data Management
★ 4.7 (343) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Apache Hadoop, Apache Hive, Big Data, Database Design, Data Integration, Social Media Analytics, Extensible Markup Language (XML), Database Management Systems, Database Management, JSON, Data Processing, Distributed Computing, Data Analysis, Analytics, Scalability, Extensible Languages and XML, Data Pipelines, Query Languages, Data Cleansing, Dataflow
Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: General Data Protection Regulation (GDPR), Information Privacy, Personally Identifiable Information, Data Governance, Law, Regulation, and Compliance, Governance, Incident Response, Regulatory Compliance, Data Security, Accountability, Compliance Management, Data Processing, Data Sharing, Data Access, Regulation and Legal Compliance, Legal Risk, Informed Consent
★ 4.1 (8) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Apache Hive, Apache Mahout, NoSQL, Apache Hadoop, Extract, Transform, Load, Big Data, Data Warehousing, Data Pipelines, Data Infrastructure, Application Deployment, Databases, SQL, Applied Machine Learning, Database Development, Performance Tuning, Data Processing, File Systems, Real Time Data, Query Languages, Database Management
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Data Presentation, Data Analysis
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: R (Software), R Programming, Statistical Hypothesis Testing, Plot (Graphics), Ggplot2, Data Visualization, Data Manipulation, Exploratory Data Analysis, Statistical Programming, Statistical Visualization, Data Science, Tidyverse (R Package), Statistical Methods, Statistical Modeling, Data Analysis, Data-oriented programming, Regression Analysis, Data Structures, Data Wrangling, Statistical Analysis
★ 4.5 (15) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Matplotlib, Linear Algebra, Plot (Graphics), Data Visualization, NumPy, Scientific Visualization, Machine Learning Algorithms, Statistical Visualization, Pandas (Python Package), Applied Machine Learning, Data Science, Machine Learning, Data Analysis, Python Programming, Model Optimization, Data Manipulation, Classification Algorithms, Programming Principles, Regression Analysis, Data Structures
Beginner · Course · 1 - 3 Months

University of California, Irvine
Skills you'll gain: Supply Chain Planning, Demand Planning, Customer Demand Planning, Inventory Control, Inventory Management, Supply Chain Management, Supply Chain, Capacity Planning, Inventory and Warehousing, Materials Management, Process Optimization, Resource Utilization, Forecasting, Operations Management, Material Requirements Planning, Resource Planning, Resource Allocation, Capacity Management, Microsoft Excel, Performance Measurement
★ 4.6 (576) · Intermediate · Specialization · 1 - 3 Months
Starweaver
Skills you'll gain: Retrieval-Augmented Generation, Vector Databases, AI Personalization, Data Engineering, Context Engineering, AI Orchestration, System Monitoring, Generative AI, Data Processing, AI Workflows, Extract, Transform, Load, Scalability, Large Language Modeling, Data Architecture, Data Pipelines, Embeddings, Continuous Monitoring, Talent Pipelining, Process Optimization, Engineering
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Data Storytelling, Data Presentation, Data-Driven Decision-Making, Data Visualization, Interactive Data Visualization, Dashboard, Dashboard Creation, Data Visualization Software, Tableau Software, Exploratory Data Analysis
★ 4.5 (51) · Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: Performance Measurement, Business Intelligence Software, Interactive Data Visualization, Data Presentation, Analytics, Business Reporting, Dataflow, Anomaly Detection, Machine Learning
★ 4.2 (11) · Intermediate · Course · 1 - 4 Weeks