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.

University of Pittsburgh
Skills you'll gain: Data Storytelling, Data Presentation, Plot (Graphics), Data Visualization, Matplotlib, Interactive Data Visualization, Data Visualization Software, Seaborn, Statistical Visualization, Graphing, Data Analysis, Graphic and Visual Design, Python Programming
Build toward a degree
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Dataflow, Serverless Computing, Identity and Access Management, Data Pipelines, Google Cloud Platform, Cloud Security, Data Processing, Data Security, Cloud Storage, Containerization
Intermediate · Course · 1 - 3 Months

Johns Hopkins University
Skills you'll gain: Apache Hadoop, Big Data, Apache Hive, Apache Spark, NoSQL, Data Infrastructure, File Systems, Data Processing, Data Management, Dataflow, Analytics, Data Science, Databases, Data Integration, SQL, Query Languages, File I/O, Data Architecture, Distributed Computing, Performance Tuning
Intermediate · Specialization · 3 - 6 Months

Coursera
Skills you'll gain: Data Integration, Apache Kafka, Systems Integration, Restful API, Data Infrastructure, Enterprise Security, Enterprise Architecture, Application Programming Interface (API), Relational Databases, Databases, Database Management, Real Time Data, Authentications
Beginner · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Ggplot2, Scatter Plots, Plot (Graphics), Data Visualization Software, Statistical Visualization, Heat Maps, R Programming, Data Wrangling, Tidyverse (R Package), Graphics Software
Intermediate · Course · 1 - 4 Weeks

Fractal Analytics
Skills you'll gain: A/B Testing, Design Thinking, User Centered Design, Design and Product, Experience Design, Data Storytelling, Dashboard, User Feedback, Solution Design, Stakeholder Engagement, Stakeholder Analysis, Customer Insights, Interviewing Skills, Empathy & Emotional Intelligence, Business Requirements, Problem Solving, Product Testing
Intermediate · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Classification Algorithms, Applied Machine Learning, Machine Learning Methods, Dimensionality Reduction, Data Analysis, Supervised Learning, Anomaly Detection, Machine Learning, Machine Learning Algorithms, Unsupervised Learning, Data Mining, Predictive Modeling, Model Evaluation, Regression Analysis, Decision Tree Learning, Statistical Methods, Project Planning, Logistic Regression
Intermediate · Course · 1 - 3 Months

University of Michigan
Skills you'll gain: NumPy, Debugging, Pandas (Python Package), Statistics, Correlation Analysis, Data Analysis, Statistical Programming, Descriptive Statistics, Exploratory Data Analysis, Data Wrangling, Data Preprocessing, LLM Application, Data-oriented programming, Code Reusability, Data Transformation, Numerical Analysis, Critical Thinking, Functional Design
Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Plotly, Data Visualization, Statistical Visualization, Box Plots, Interactive Data Visualization, Histogram, Statistical Analysis, Data Analysis, Probability
Beginner · Guided Project · Less Than 2 Hours

Johns Hopkins University
Skills you'll gain: Ggplot2, Plot (Graphics), Data Visualization, Statistical Visualization, Data Visualization Software, Exploratory Data Analysis, Data Presentation, R (Software), Tidyverse (R Package), R Programming, Graphing, Data Wrangling, Data Manipulation
Mixed · Course · 1 - 3 Months

Cisco Learning and Certifications
Skills you'll gain: Virtual Networking, Network Troubleshooting, Data Centers, Software-Defined Data Center (SDDC), vSphere Networking and Storage, Network Switches, Cloud Services, iSCSI Configuration, Virtualization, Cloud Computing, Network Architecture, Virtual Machines, Computer Networking, OSI Models, Computing Platforms, TCP/IP, Network Protocols, Server Administration, Networking Hardware, Microsoft Windows
Beginner · Specialization · 3 - 6 Months

University at Buffalo
Skills you'll gain: Data Storytelling, Statistical Process Controls, Data Literacy, Process Mapping, Data Ethics, Data Analysis Software, Data Presentation, Performance Improvement, Data-Driven Decision-Making, Data Collection, Process Improvement, Process Improvement and Optimization, Data Visualization Software, Business Process, Business Process Improvement, Business Analytics, Tableau Software, Analytics, Root Cause Analysis, Lean Methodologies
Beginner · Specialization · 1 - 3 Months