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: Relational Databases, SQL, Databases, Data Access, Data Manipulation, Database Development, Query Languages
Beginner · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Marketing Analytics, Dashboard Creation, Marketing Budgets, Dashboard, Data-Driven Marketing, Regression Analysis, Marketing Effectiveness, Data-Driven Decision-Making, Statistical Reporting, Data Literacy, Analytics, Statistical Analysis, Statistical Methods, Marketing Strategies, Data Presentation, Data Analysis, Return On Investment, Data Visualization, Data Storytelling, Budgeting
Intermediate · Course · 1 - 4 Weeks

Università di Napoli Federico II
Skills you'll gain: Unsupervised Learning, Supervised Learning, R Programming, R (Software), Machine Learning Methods, Statistical Machine Learning, Artificial Neural Networks, Applied Machine Learning, Transfer Learning, Machine Learning, Machine Learning Algorithms, Exploratory Data Analysis, Tidyverse (R Package), Deep Learning, Ggplot2, Regression Analysis, Dimensionality Reduction, Data Analysis, Data Wrangling, Data Manipulation
★ 4.9 (10) · Intermediate · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Descriptive Statistics, Statistical Visualization, Data Transformation, Data Cleansing, Probability, Box Plots, Histogram, Probability Distribution, Probability & Statistics, Scatter Plots, Statistics, Microsoft Excel, Excel Formulas, Data Analysis, Statistical Methods, Spreadsheet Software, Bayesian Statistics
★ 4.6 (41) · Beginner · Course · 1 - 3 Months

Università di Napoli Federico II
Skills you'll gain: Data Visualization, Interactive Data Visualization, Tableau Software, Dashboard, Data Storytelling, Spatial Data Analysis, Data Visualization Software, Peer Review, Dashboard Creation, Data Presentation, Data Integration, Geospatial Mapping, Spatial Analysis, Data Wrangling, Business Intelligence Software, Business Intelligence, Plot (Graphics), Data Manipulation, Data Preprocessing, Data Analysis
★ 4.6 (11) · Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Salesforce, Data Governance, Cloud Management, Customer Data Management, Data Integration, Data Management, Customer Insights, Data Architecture, Dataflow, Data Modeling, Data Access, Data Processing, Cloud Computing, Data Import/Export, Metadata Management, Real Time Data, Customer Analysis, Data Analysis, OpenAI API, Automation
Intermediate · Course · 1 - 3 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: PySpark, MySQL, Data Pipelines, Apache Spark, Data Access, Data Processing, Data Transformation, Data Manipulation, Distributed Computing, Data Import/Export, Python Programming
★ 4.4 (42) · Mixed · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Calculus, Integral Calculus, Numerical Analysis, Advanced Mathematics, Mathematical Theory & Analysis, Mathematical Modeling, Mathematical Software, Data Analysis, Probability, Geometry, Applied Mathematics, Mechanics, Estimation, Probability & Statistics, Exploratory Data Analysis, Graphing, Physics
★ 4.8 (143) · Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Metadata Management, Data Governance, Dependency Analysis, Data Management, Data Modeling, Personally Identifiable Information, Data Security, Data Quality, Data Compilation, Data Processing, Data Presentation, Automation, Docker (Software), Application Programming Interface (API), Application Lifecycle Management
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Plot (Graphics), Data Storytelling, Heat Maps, Data Mapping
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Data Lakes, File Management, Microsoft Azure, Azure Synapse Analytics, Information Management, Data Management, Databricks, Data Storage Technologies, Data Security
★ 4.6 (18) · Beginner · Guided Project · Less Than 2 Hours