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.
Johns Hopkins University
Skills you'll gain: Epidemiology, Mathematical Modeling, Infectious Diseases, Public Health, Public Health and Disease Prevention, Infection Control, Statistical Modeling, Predictive Modeling, Health Policy, Forecasting, Model Evaluation, Data Analysis
★ 4.8 (15) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Threat Modeling, Cyber Governance, Cybersecurity, Cyber Security Policies, Intrusion Detection and Prevention, Cryptography, Network Security, Cyber Risk, Cryptographic Protocols, Cyber Attacks, IT Security Architecture, Cyber Security Assessment, Cyber Security Strategy, Threat Management, Security Management, Risk Management Framework, Threat Detection, Encryption, Vulnerability Scanning, Incident Response
★ 3.4 (17) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Medical Privacy, Pharmacology, Pharmacy, Pharmacy Operations, Pharmaceuticals, Basic Life Support (BLS) Certification, Healthcare Ethics, Medication Dispensation, Health Care Procedure and Regulation, Pharmacotherapy, Clinical Pharmacy, Health Insurance Portability And Accountability Act (HIPAA) Compliance, Infectious Diseases, Life Support, Public Health and Disease Prevention, Emergency Response, Health Information Management and Medical Records, Bloodborne Pathogens, Public Health, Information Privacy
★ 4.9 (26) · Intermediate · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Spring Boot, Database Design, Object-Relational Mapping, Application Frameworks, Spring Framework, Data Modeling, Database Development, Database Software, Data Mapping, Application Development, Database Architecture and Administration, Requirements Analysis, Data Persistence
★ 4.4 (30) · Beginner · Guided Project · Less Than 2 Hours

Howard University
Skills you'll gain: Spreadsheet Software, Microsoft Excel, Data Modeling, Mathematical Modeling, Excel Formulas, Business Modeling, Business Analysis, Operations Research, Business Process, Financial Modeling, Investment Management, Process Optimization, Applied Mathematics, Data-Driven Decision-Making, Business Strategy, Revenue Management, Trend Analysis, Resource Allocation
★ 4.7 (23) · Intermediate · Course · 1 - 4 Weeks

Birla Institute of Technology & Science, Pilani
Skills you'll gain: C (Programming Language), Programming Principles, Computer Programming, Memory Management, Computational Thinking, Computer Systems, Data Structures, Algorithms, File I/O, Operating Systems, Computer Hardware
★ 4.5 (56) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Linux, Scripting, Linux Administration, Linux Commands, Scripting Languages, Operating System Administration, Data Persistence, Bash (Scripting Language), Shell Script, Unix Shell, Systems Administration, IT Automation, Software Installation, Data Store, Command-Line Interface, Cloud Hosting, Object-Relational Mapping, YAML, System Programming, Python Programming
★ 4.8 (48) · Mixed · Course · 1 - 3 Months

Skills you'll gain: CrewAI, AI Orchestration, AI Workflows, Agentic Workflows, Workflow Management, Generative AI Agents, AI Integrations, Business Process Automation, Tool Calling, Automation, LLM Application, Agentic systems, Decision Making, Process Improvement, Customer Service
★ 4.8 (27) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Identity and Access Management, Google Cloud Platform, Cloud Infrastructure, Cloud Computing, Infrastructure As A Service (IaaS), Cloud Solutions, Data Storage Technologies, Data Storage, Cloud Management, Cloud Services, Cloud Storage, User Provisioning, Cloud Security, Role-Based Access Control (RBAC), Capacity Management, Security Controls, User Accounts, Key Management, System Monitoring, Encryption
★ 4.8 (256) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Data Visualization, Sales Process, Sales Presentations, Customer Relationship Management (CRM) Software, Target Market, Market Analysis, Sales, Presentations, Content Creation, Graphic Design, User Accounts
★ 4.7 (27) · Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: C and C++, C++ (Programming Language), Data Structures, Application Development, Program Development, Data Storage, Programming Principles, Computer Programming, Java Programming, Software Development, Computer Science
★ 4.5 (46) · Beginner · Guided Project · Less Than 2 Hours

Peking University
Skills you'll gain: Research, Research Methodologies, Legal Research, Research Design, Writing, Research Reports, Report Writing, Databases
★ 4.4 (47) · Mixed · Course · 1 - 3 Months