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.

Skills you'll gain: Power BI, Data Modeling, Data Storytelling, Data Analysis Expressions (DAX), Data Visualization Software, Data Presentation, Data Transformation, Business Intelligence, Dashboard, Microsoft Excel, Dashboard Creation, Interactive Data Visualization, Business Intelligence Software, Data Manipulation, Data Cleansing, Key Performance Indicators (KPIs), Report Writing, Data Import/Export
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Apache Spark, Data Persistence, Big Data, Data Processing, Distributed Computing, Data Import/Export, JSON, Data Transformation, Performance Tuning
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Data Structures, Algorithms, Programming Principles, Computer Programming, Theoretical Computer Science, Computational Thinking, Javascript, Memory Management
Intermediate · Course · 1 - 3 Months

ESSEC Business School
Skills you'll gain: Peer Review, Analytical Skills, Complex Problem Solving, Data Synthesis, Data Literacy, Data Analysis, Constructive Feedback, Value Propositions, Data Integration, Exploratory Data Analysis, Data Presentation, Presentations
Mixed · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Statistical Hypothesis Testing, Statistical Methods, Probability & Statistics, Data Ethics, Statistical Analysis, Statistical Inference, Statistics, Sample Size Determination, Sampling (Statistics), Probability Distribution
Build toward a degree
Intermediate · Course · 1 - 3 Months

Johns Hopkins University
Skills you'll gain: Integral Calculus, Calculus, Advanced Mathematics, Applied Mathematics, Mathematical Modeling
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Data Visualization, Data Visualization Software, Data Presentation, Interactive Data Visualization, Data Storytelling, Microsoft Office
Beginner · Guided Project · Less Than 2 Hours

Northeastern University
Skills you'll gain: Database Management Systems, Data Modeling, Databases, Database Design, Database Systems, Database Management, Database Theory, Big Data, Unified Modeling Language, Database Architecture and Administration, Data Integration, Data Storage Technologies, Data Management, Apache Hadoop, Apache Spark, Conceptual Design, MongoDB
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Logistic Regression, SAS (Software), Predictive Analytics, Data Analysis Software, Predictive Modeling, Advanced Analytics, Data Validation, Feature Engineering, Statistical Software, Model Evaluation, Data Analysis, Statistical Analysis, Regression Analysis, Statistical Modeling, Exploratory Data Analysis, Statistical Methods, Small Data, Statistical Programming, Statistical Hypothesis Testing, Probability & Statistics
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Rmarkdown, R (Software), Data Import/Export, R Programming, Ggplot2, Plot (Graphics), Data Manipulation, Plotly, Data Visualization, Web Scraping, Statistical Visualization, Interactive Data Visualization, Data Visualization Software, Data Wrangling, Tidyverse (R Package), Data Processing, Data Cleansing, Statistical Programming, Programming Principles, Data Structures
Beginner · Course · 1 - 3 Months

Skills you'll gain: Apache Spark, Distributed Computing, Data Pipelines, Performance Tuning, Scalability, Debugging, Performance Analysis, Data Processing
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Data Architecture, Data Infrastructure, LLM Application, Data Quality, AI Workflows, Generative AI, Data Governance, Data Pipelines, Extract, Transform, Load, Distributed Computing, AI Integrations, Data Management, Self Service Technologies, Cloud Storage, Data Processing, Data Storage, Scalability, Data Wrangling, Data Collection
Beginner · Course · 1 - 4 Weeks