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: Calculus, Data Analysis Software, Mathematical Software, Applied Mathematics, Data Analysis, Analysis, Mathematical Theory & Analysis, Derivatives, Advanced Mathematics, Graphing, Algebra
★ 4.7 (210) · Beginner · Course · 1 - 3 Months

Corporate Finance Institute
Skills you'll gain: Microsoft Excel, Pivot Tables And Charts, Spreadsheet Software, Dashboard, Data Transformation, Dashboard Creation, Data Analysis, Excel Formulas, Data Visualization Software, Data Presentation, Data Manipulation
★ 4.8 (92) · Beginner · Course · 1 - 3 Months

Skills you'll gain: PySpark, Databricks, Apache Spark, MLOps (Machine Learning Operations), Microsoft Azure, Big Data, Data Lakes, Model Training, Machine Learning Methods, Data Processing, Deep Learning, Data Transformation, Model Deployment, Data Pipelines, Data Manipulation, Model Evaluation, Machine Learning, Distributed Computing, Exploratory Data Analysis
★ 3.1 (79) · Intermediate · Course · 1 - 3 Months

Google Cloud
Skills you'll gain: Looker (Software), Dashboard Creation, Dashboard, Data Governance, Data Visualization, Digital Transformation, Data Presentation, Real Time Data, Google Cloud Platform, Data Modeling, Business Transformation, Interactive Data Visualization, Data Visualization Software, Data Synthesis, Data Management, Data Warehousing, Pivot Tables And Charts, Ad Hoc Reporting, Performance Tuning, Business Intelligence Software
★ 4.6 (471) · Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Data Analysis Expressions (DAX), Power BI, Business Requirements, Financial Data, Data Modeling, Financial Analysis, Data Visualization Software, Time Series Analysis and Forecasting, Data Visualization, Data Import/Export
★ 4.5 (17) · Intermediate · Guided 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: Data Storytelling, Qualitative Research, Market Research, Quantitative Research, Data-Driven Decision-Making, Benchmarking, Data Presentation, Descriptive Statistics, Competitive Analysis, Analytical Skills, Brand Awareness, Research Design, Market Dynamics, Data Collection, Data Literacy, Data Analysis, ChatGPT, Data Analysis Software, Microsoft Excel, R Programming
★ 4.5 (249) · Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Data Storytelling, Model Evaluation, Feature Engineering, Data Visualization, Data Presentation, Model Training, Exploratory Data Analysis, Machine Learning Methods, Applied Machine Learning, Model Optimization, Data Science, Machine Learning, Data Wrangling, Data Analysis, Data Preprocessing, Matlab, Data Processing, Technical Communication, Predictive Modeling, Data Import/Export
★ 4.7 (25) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: PySpark, Data Pipelines, Apache Spark, Dashboard Creation, Dashboard, Interactive Data Visualization, Data Processing, Real Time Data, Natural Language Processing, Distributed Computing, Deep Learning, Performance Tuning
Intermediate · Course · 1 - 3 Months

Maven Analytics
Skills you'll gain: Microsoft Copilot, Microsoft Excel, Pivot Tables And Charts, Excel Formulas, People Analytics, Data Manipulation, Data Analysis, Data Wrangling, Data Visualization, Artificial Intelligence, Generative AI, Prompt Engineering
★ 4.6 (16) · Beginner · Course · 1 - 3 Months

Skills you'll gain: MySQL, Database Software, Database Management, Database Theory, Data Warehousing, Interactive Data Visualization, Dashboard, Database Administration, Data Visualization Software, Star Schema, Dashboard Creation, Linux Commands, Unix, Data Integrity, Unit Testing, Algorithms, Analytics, Database Architecture and Administration, Software Versioning, Command-Line Interface
★ 4.6 (7.7K) · Beginner · Professional Certificate · 3 - 6 Months

Digital Marketing Institute
Skills you'll gain: Data-Driven Decision-Making, Marketing Strategies, Data-Driven Marketing, Data Strategy, Data Ethics, Customer Analysis, Digital Analysis, Marketing Effectiveness, Marketing Planning, Strategic Decision-Making, Digital Marketing, Business Analytics, Marketing Analytics, Customer Insights, Performance Measurement, Marketing Strategy and Techniques, Customer experience strategy (CX), MarTech, Pay Per Click Advertising, Data Management
Beginner · Course · 1 - 4 Weeks