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.

AI CERTs
Skills you'll gain: Responsible AI, AI Security, Data Ethics, Accountability Frameworks, Ethical Standards And Conduct, Compliance Training, Business Ethics, Governance, Law, Regulation, and Compliance, Regulation and Legal Compliance, Legal Risk, Regulatory Compliance, Compliance Management, Data Governance, Artificial Intelligence, Regulatory Requirements, Accountability, AI literacy, General Data Protection Regulation (GDPR), Governance Risk Management and Compliance
Beginner · Course · 1 - 3 Months

Google Cloud
Skills you'll gain: Prompt Engineering, Responsible AI, Google Gemini, Gemini, Generative AI, Generative AI Agents, Generative Model Architectures, Google Cloud Platform, AI Workflows, Google Workspace, AI Orchestration, Agentic Workflows, AI Product Strategy, Prompt Patterns, AI Security, Data Ethics, Large Language Modeling, Artificial Intelligence, Cloud Computing, Collaboration
★ 4.8 (228) · Beginner · Specialization · 3 - 6 Months
University of Illinois Urbana-Champaign
Skills you'll gain: Data Visualization, Business Analytics, Data Presentation, Analytics, Interactive Data Visualization, Data Literacy, Data Analysis, Business Intelligence, Analytical Skills, Business Analysis, Advanced Analytics, Data-Driven Decision-Making, Analysis, Trend Analysis, Predictive Analytics, Data Strategy, Data Warehousing, Data Science, Workforce Planning, Case Studies
★ 4.6 (282) · Intermediate · Course · 1 - 4 Weeks

University of Colorado System
Skills you'll gain: Data Encryption Standard, Public Key Infrastructure, Cryptography, Brute-force attacks, Key Management, Advanced Encryption Standard (AES), Cryptographic Protocols, Encryption, Data Integrity, Cybersecurity, Computer Security, Information Assurance, Authentications, Data Security, Theoretical Computer Science, Public Key Cryptography Standards (PKCS), Threat Modeling, Communication Systems, Algorithms, Digital Communications
★ 4.6 (919) · Intermediate · Specialization · 3 - 6 Months

Edureka
Skills you'll gain: PySpark, Apache Spark, Data Management, Distributed Computing, Apache Hadoop, Data Processing, Data Manipulation, Data Analysis, Exploratory Data Analysis, Python Programming
★ 3.7 (51) · Beginner · Course · 1 - 4 Weeks

Emory University
Skills you'll gain: Consulting, Management Consulting, Excel Formulas, Benchmarking, Microsoft Excel, Analytical Skills, Business Research, Data Collection, Spreadsheet Software, Analysis, Competitive Intelligence, Competitive Analysis, Market Analysis, Data Modeling, Supply Chain, Performance Analysis, Business Strategy, Market Dynamics, Gap Analysis
★ 4.9 (414) · Beginner · Course · 1 - 3 Months

Università di Napoli Federico II
Skills you'll gain: English Language, Language Competency, Language Learning, Multilingualism, Intercultural Competence, Interpersonal Communications, Nutrition and Diet, Advocacy, Cultural Diversity, Vocabulary, Trend Analysis, Environmental Issue, Grammar, Education and Training, Social Impact, Oral Comprehension, Descriptive Statistics, Climate Change Mitigation
★ 4.5 (82) · Intermediate · Course · 1 - 3 Months

Johns Hopkins University
Skills you'll gain: Patient Education and Support, Radiation Therapy, Diagnostic Tests, Oncology, Pain Management, Preventative Care, Patient Evaluation, Endocrinology, Pathology, Urology, Patient Treatment, Treatment Planning, General Medical Tests and Procedures, Biology, Surgery, Anatomy, Risk Analysis, Pharmacotherapy, Medical Imaging
★ 4.8 (758) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Distributed Denial-Of-Service (DDoS) Attacks, Encryption, Cybersecurity, Cyber Threat Intelligence, Cyber Attacks, Threat Management, Security Strategy, Authentications, Threat Detection, Malware Protection, Cyber Security Policies, Network Security, Authorization (Computing), Cryptography, Endpoint Security, Data Security, Security Controls, Active Directory, Azure Active Directory, Identity and Access Management
★ 4.8 (316) · Beginner · Course · 1 - 3 Months

Khalifa University
Skills you'll gain: Feature Engineering, Responsible AI, AI Integrations, Data Preprocessing, Strategic Decision-Making, Data-Driven Decision-Making, Data Ethics, Natural Language Processing, AI Security, Decision Making, Model Training, LLM Application, Large Language Modeling, Decision Support Systems, Artificial Intelligence, Predictive Analytics, Advanced Analytics, Governance, Data Governance, Workflow Management
★ 3.9 (7) · Beginner · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Biostatistics, Logistic Regression, Regression Analysis, Statistical Methods, Statistical Analysis, Data Literacy, Quantitative Research, Public Health, Statistical Modeling, Statistics, Probability & Statistics, Statistical Inference, Statistical Hypothesis Testing, Risk Modeling
★ 4.7 (391) · Beginner · Course · 1 - 3 Months

Infosec
Skills you'll gain: Digital Forensics, grep, TCP/IP, Network Protocols, Data Security, General Networking, Record Keeping, Data Integrity, File Management, Ethical Standards And Conduct, Encryption, Algorithms
★ 4.7 (270) · Intermediate · Course · 1 - 3 Months