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 California, Davis
Skills you'll gain: Social Network Analysis, Social Sciences, Network Analysis, Data Science, Machine Learning, Machine Learning Methods, Computational Thinking, Economics, Policy, and Social Studies, Artificial Intelligence, Data Analysis, Social Impact, Simulations, Big Data, Data Collection, Scientific Methods, Digital Analysis, Digital Transformation
★ 4.7 (357) · Beginner · Course · 1 - 4 Weeks

University of California, Irvine
Skills you'll gain: Grammar, Peer Review, Writing, Editing, Writing and Editing, Organizational Skills, Research, Proofreading, Report Writing, Research Reports, Research Methodologies, Literacy, Critical Thinking, English Language, Planning, Style Guides, Persuasive Communication, Descriptive Statistics
★ 4.7 (23K) · Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Exploratory Data Analysis, Unsupervised Learning, Supervised Learning, Applied Machine Learning, Predictive Modeling, Data Presentation, Machine Learning, Collaborative Software, Data Analysis, Predictive Analytics, Technical Communication, Machine Learning Algorithms, Statistical Analysis, Scikit Learn (Machine Learning Library), Keras (Neural Network Library), Descriptive Statistics, Regression Analysis, Python Programming, Text Mining, Artificial Neural Networks
★ 4.7 (218) · Advanced · Course · 1 - 3 Months

Vanderbilt University
Skills you'll gain: Prompt Engineering, AI Security, ChatGPT, Retrieval-Augmented Generation, Prompt Patterns, Generative AI Agents, Crisis Management, Generative AI, LLM Application, Incident Response, Responsible AI, AI literacy, OpenAI, OpenAI API, Expense Management, AI Personalization, AI Enablement, AI Integrations, Cyber Governance, Cybersecurity
★ 4.8 (8.8K) · Beginner · Specialization · 3 - 6 Months
Skills you'll gain: SAS (Software), Network Analysis, Trend Analysis, Data Manipulation, Data Analysis, Forecasting, Data Quality, Text Mining, Exploratory Data Analysis, Spatial Data Analysis, Data Visualization Software, Spatial Analysis, Data Transformation, Dashboard, Data Mapping, Analytics, Data Visualization, Business Analytics, Business Reporting, Interactive Data Visualization
★ 4.7 (1.1K) · Beginner · Professional Certificate · 3 - 6 Months

Amazon Web Services
Skills you'll gain: Artificial Intelligence and Machine Learning (AI/ML), Generative AI, Deep Learning, Artificial Intelligence, Amazon Web Services, Applied Machine Learning, AI literacy, Machine Learning, Digital Transformation
★ 4.6 (3.9K) · Mixed · Course · 1 - 4 Weeks
University of Washington
Skills you'll gain: Unsupervised Learning, Supervised Learning, Data Science, Machine Learning Methods, Predictive Analytics, Applied Machine Learning, Analytics, Data Analysis, R Programming, Model Optimization, Statistical Methods, Decision Tree Learning, Statistical Inference, Statistical Analysis, Machine Learning, Statistics, Graph Theory, Classification Algorithms, Network Analysis, Big Data
★ 4.1 (325) · Mixed · Course · 1 - 4 Weeks

DeepLearning.AI
Skills you'll gain: OpenAI API, ChatGPT, Prompt Engineering, LLM Application, OpenAI, Large Language Modeling, Application Development
★ 4.7 (2.5K) · Beginner · Project · Less Than 2 Hours

Skills you'll gain: Sales Strategy, Sales Process, Microsoft Copilot, Sales Operations, Sales Enablement, Responsible AI, Generative AI Agents, Anthropic Claude, Sales, Report Writing, HubSpot CRM, Email Automation, Generative AI, Business Process Automation, Automation, Workflow Management, Customer Relationship Management, Forecasting, Revenue Forecasting, Data-Driven Decision-Making
★ 4.3 (129) · Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: User Research, Cascading Style Sheets (CSS), JSON, User Experience Design, Command-Line Interface, Design Research, Javascript, Unix Shell, Usability, Debugging, User Interface (UI), Software Visualization, Web Content Accessibility Guidelines, Pseudocode, Hypertext Markup Language (HTML), User Interface and User Experience (UI/UX) Design, UI Components, Unit Testing, Mobile Development Tools, Code Reusability
★ 4.7 (24K) · Beginner · Professional Certificate · 3 - 6 Months

Skills you'll gain: MySQL, Database Software, Database Management, Database Theory, Data Warehousing, Interactive Data Visualization, Dashboard, Database Administration, Data Visualization Software, Command-Line Interface, Star Schema, Dashboard Creation, Unix Shell, Data Integrity, Unit Testing, Algorithms, Analytics, Linux, Database Architecture and Administration, Software Versioning
★ 4.6 (7.8K) · Beginner · Professional Certificate · 3 - 6 Months

New York Institute of Finance
Skills you'll gain: Tensorflow, Keras (Neural Network Library), Financial Trading, Data Pipelines, Applied Machine Learning, Machine Learning, Securities Trading, Statistical Machine Learning, Model Training, Market Trend, Data Preprocessing, Deep Learning, Python Programming, Model Evaluation, Correlation Analysis, Artificial Neural Networks, Time Series Analysis and Forecasting
★ 3.9 (379) · Intermediate · Course · 1 - 3 Months