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: Rmarkdown, Shiny (R Package), Ggplot2, Tidyverse (R Package), Data Visualization, Spatial Data Analysis, Statistical Visualization, Dashboard Creation, Scatter Plots, Plot (Graphics), Dashboard, R (Software), Data Import/Export, Interactive Data Visualization, R Programming, Data Visualization Software, Spatial Analysis, Geospatial Information and Technology, Data Science, Data Analysis
★ 4.8 (452) · Beginner · Specialization · 3 - 6 Months

DeepLearning.AI
Skills you'll gain: Pandas (Python Package), Data Visualization, Time Series Analysis and Forecasting, Matplotlib, Statistical Visualization, Data Visualization Software, Statistical Inference, Statistical Analysis, Seaborn, Statistical Programming, Analytics, Statistical Methods, Exploratory Data Analysis, Descriptive Statistics, Probability & Statistics, Data Manipulation, Predictive Modeling, Programming Principles, Jupyter, Python Programming
★ 4.6 (25) · Beginner · Course · 1 - 3 Months

University of California, Davis
Skills you'll gain: Data Integration, Data Validation, Data Quality, Data Cleansing, Data Modeling, Health Informatics, Data Transformation, Health Systems, Data Warehousing, Star Schema, Data Analysis, Analytics, Interoperability, Database Systems, Relational Databases
★ 4.6 (56) · Intermediate · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Plotly, Exploratory Data Analysis, Scatter Plots, Plot (Graphics), Data Visualization, Data Visualization Software, Interactive Data Visualization, Data Analysis, Python Programming
★ 4 (51) · Intermediate · Guided Project · Less Than 2 Hours

University of Maryland, College Park
Skills you'll gain: Sampling (Statistics), Statistical Programming, Statistical Software, Data Analysis Software, Statistical Analysis, STATA (Software), Statistical Methods, R (Software), Statistical Modeling, Regression Analysis, Data Analysis, Logistic Regression
★ 3.8 (138) · Mixed · Course · 1 - 3 Months

University of Illinois Urbana-Champaign
Skills you'll gain: Data Mining, Big Data, Text Mining, Unstructured Data, Spatial Data Analysis, Advanced Analytics, Image Analysis, Algorithms, Correlation Analysis, Information Privacy
★ 4.3 (326) · Mixed · Course · 1 - 3 Months

LearnQuest
Skills you'll gain: Data Analysis, Analytics, Data Analysis Software, Statistical Analysis, Statistical Programming, Spreadsheet Software, Analytical Skills, Exploratory Data Analysis, Descriptive Analytics, Data Cleansing, Statistical Methods, Data Collection, Advanced Analytics, Statistics, R (Software), Predictive Analytics, Query Languages, Data Visualization, Data Visualization Software
★ 3.5 (34) · Beginner · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Data Visualization, Data Visualization Software, Interactive Data Visualization, Visualization (Computer Graphics), User Centered Design, Data Presentation, Usability, Human Centered Design, Data Storytelling, Design Research, User Research, Graphic and Visual Design, Usability Testing, Quantitative Research, Design Elements And Principles
★ 4.7 (43) · Intermediate · Course · 1 - 4 Weeks

Rice University
Skills you'll gain: Data Visualization Software, Plot (Graphics), Package and Software Management, Python Programming, Data Cleansing, Data Mapping, Code Reusability, Software Installation, Data Processing, Data Integration, Data Import/Export, Program Development, Data Structures, Software Documentation
★ 4.6 (549) · Beginner · Course · 1 - 4 Weeks

University of California San Diego
Skills you'll gain: Unit Testing, Data Structures, Java, Java Programming, Software Testing, Program Development, Performance Tuning, Algorithms, Performance Testing, Object Oriented Programming (OOP), Theoretical Computer Science
★ 4.8 (2.3K) · Intermediate · Course · 1 - 3 Months

Alberta Machine Intelligence Institute
Skills you'll gain: Feature Engineering, Data Preprocessing, Model Evaluation, Data Quality, Model Training, Data Validation, Data Cleansing, Data Transformation, Verification And Validation, Applied Machine Learning, Machine Learning, Responsible AI, Machine Learning Algorithms, Algorithms, Python Programming, Computer Programming, Linear Algebra, Statistical Analysis
★ 4.4 (98) · Intermediate · Course · 1 - 4 Weeks
Duke University
Skills you'll gain: Data Ethics, Exploratory Data Analysis, Data-Driven Decision-Making, Logistic Regression, Statistical Modeling, R (Software), Web Scraping, Ggplot2, Model Evaluation, Statistical Reporting, Data Visualization Software, Predictive Modeling, Tidyverse (R Package), Data Visualization, Responsible AI, Data Transformation, R Programming, Data Science, Data Wrangling, Version Control
★ 4.7 (40) · Beginner · Specialization · 1 - 3 Months