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.

DeepLearning.AI
Skills you'll gain: Model Optimization, Machine Learning Methods, Applied Mathematics, Calculus, Applied Machine Learning, Numerical Analysis, Mathematical Modeling, Machine Learning, Data Visualization, Python Programming, Artificial Neural Networks, Deep Learning, Computer Programming, Derivatives
★ 4.8 (956) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Quantitative Research, R (Software), Scatter Plots, R Programming, Statistical Visualization, Correlation Analysis, Statistical Programming, Descriptive Statistics, Statistical Analysis, Data Analysis, Statistics, Statistical Methods, Exploratory Data Analysis, Data Manipulation, Data Import/Export, Data Structures, Development Environment
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Data Visualization, Tableau Software, Dashboard Creation, Dashboard, Interactive Data Visualization, Data Storytelling, Data Analysis, Revenue Forecasting, Data Visualization Software, Trend Analysis, Spatial Data Analysis, Data Cleansing, Data Preprocessing, R (Software), Data Wrangling, R Programming, Time Series Analysis and Forecasting, Spatial Analysis, Forecasting, Data Mapping
Beginner · Course · 1 - 3 Months

LearnQuest
Skills you'll gain: Relational Databases, SQL, Databases, Data Access, Data Manipulation, Database Development, Query Languages
Beginner · Course · 1 - 4 Weeks

Dartmouth College
Skills you'll gain: C (Programming Language), Memory Management, C and C++, Embedded Systems, Data Structures, Programming Principles, Computer Engineering, Algorithms, Computer Programming, Linux
★ 4.4 (58) · Beginner · Course · 1 - 3 Months

Institut Mines-Télécom
Skills you'll gain: Digital Transformation, Data Strategy, Data Quality, Data Modeling, Data Governance, Business Intelligence, Data Management, Data-Driven Decision-Making, Decision Support Systems, Data Literacy, Data Analysis, Big Data, Data Processing, Business Strategy, Data Visualization, Artificial Intelligence
★ 4.1 (7) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Cryptography, Data Security, Encryption, Authorization (Computing), General Data Protection Regulation (GDPR), Cryptographic Protocols, Public Key Infrastructure, Authentications, Key Management, Identity and Access Management, Web Development, Application Security, Web Applications, Data Integrity, Multi-Factor Authentication, Security Strategy
★ 4.6 (7) · Beginner · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Peer Review, Data Literacy, Research, Quantitative Research, Report Writing, Analytical Skills, Science and Research, Data Analysis, Research Methodologies
★ 4.9 (7) · Intermediate · Course · 1 - 4 Weeks

DeepLearning.AI
Skills you'll gain: AI Workflows, Agentic Workflows, LangGraph, AI Orchestration, Data Visualization, Prompt Engineering, Generative AI Agents, Model Evaluation, LLM Application, Tool Calling, Retrieval-Augmented Generation, Agentic systems, Generative AI, Large Language Modeling
★ 3.3 (7) · Intermediate · Project · Less Than 2 Hours
Skills you'll gain: Data Lakes, Data Migration, Apache Hive, Data Infrastructure, Data Import/Export, Data Architecture, Apache Spark, Data Maintenance, Data Pipelines, Database Design, Data Store, Database Management, Performance Tuning, Query Languages, Metadata Management, Data Validation, Transaction Processing
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Cloud Infrastructure, Microsoft Azure, Infrastructure As A Service (IaaS), Data Processing, Big Data, Apache Spark, Artificial Intelligence and Machine Learning (AI/ML), Databricks, Infrastructure Security, Data Pipelines, Virtual Networking, Azure DevOps, Virtual Machines, Azure Active Directory, Analytics, Active Directory, Network Security, Model Deployment, Python Programming, Role-Based Access Control (RBAC)
★ 4.4 (1.6K) · Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Data Engineering, Data Pipelines, Data Transformation, Extract, Transform, Load, Data Integration, Data Warehousing, Software Engineering Tools, Data Import/Export, Stored Procedure, Data Sharing, SQL, Data Analysis, GitHub, Microsoft Visual Studio, Command-Line Interface, Application Deployment
★ 4.7 (143) · Intermediate · Course · 1 - 3 Months