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.

LearnQuest
Skills you'll gain: JUnit, Unit Testing, Test Case, Eclipse (Software), Test Data, Test Automation, Test Execution Engine, Integrated Development Environments, Java
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Version Control, Test Script Development, Continuous Integration, Test Execution Engine, Test Tools, Automation, Scripting, Web Scraping, Hypertext Markup Language (HTML), Software Design Patterns, Development Environment, Integrated Development Environments, Debugging, Command-Line Interface, File I/O
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Information Architecture, UI/UX Research, Design Research, User Interface and User Experience (UI/UX) Design, Persona Development, Usability, Qualitative Research, Usability Testing, Surveys, Prototyping, Tree Maps, Interviewing Skills
Intermediate · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Cryptography, Encryption, Public Key Cryptography Standards (PKCS), Python Programming, Data Security
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: File I/O, Data Import/Export, Java Programming, Java, Computer Programming, Data Structures, Object Oriented Programming (OOP), Integrated Development Environments, Computer Science
Beginner · Course · 1 - 4 Weeks

Nanjing University
Skills you'll gain: C (Programming Language), Computer Systems, Data Structures, System Programming, Programming Principles, Computer Architecture, System Design and Implementation, Operating Systems, Data Storage, Computer Hardware, Application Security, Software Architecture
Mixed · Course · 1 - 3 Months

University of California, Irvine
Skills you'll gain: Swift Programming, iOS Development, Apple iOS, Objective-C (Programming Language), Mobile Development, Application Development, Apple software proficiency, Application Servers, Object Oriented Programming (OOP), Data Structures, User Interface (UI)
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Prompt Engineering, Generative AI, A/B Testing, Generative AI Agents, Content Creation, Text Mining
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Model Evaluation, Data-Driven Decision-Making, Predictive Modeling, Risk Analysis, Strategic Decision-Making, Performance Metric, Technical Communication
Beginner · Course · 1 - 4 Weeks

Microsoft
Skills you'll gain: Earned Value Management, Project Schedules, Procurement, Financial Analysis, Project Performance, Cost Management, Project Estimation, Microsoft Excel, Investment Management, Return On Investment, Variance Analysis, Forecasting
Beginner · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Program Evaluation, Health Equity, Quantitative Research, Data Analysis, Statistical Analysis, Analysis, Statistical Reporting, Data Collection, Sampling (Statistics), Public Health and Disease Prevention, Regression Analysis, Maternal Health, Data Quality
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Game Design, Programming Principles, Python Programming, Scripting, Computer Programming, Scripting Languages, Computer Science
Beginner · Guided Project · Less Than 2 Hours