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: Technical Analysis, Market Dynamics, Economics, International Finance, Financial Analysis, Financial Data, Supply And Demand, Probability, Data Analysis, Advanced Analytics, Financial Policy, Market Data, Financial Trading, Market Trend, Statistical Analysis, Probability Distribution, Consumer Behaviour, Risk Analysis, Finance, Business
★ 4.8 (16) · Mixed · Course · 1 - 3 Months

Duke University
Skills you'll gain: MySQL, Bash (Scripting Language), Scripting, Database Management, Relational Databases, Shell Script, Database Administration, Command-Line Interface, Operational Databases, SQL, Databases, Data Import/Export, Database Application, Data Pipelines, Data Manipulation, Python Programming, Data Processing, Linux
★ 4.2 (13) · Beginner · Guided Project · Less Than 2 Hours

Università di Napoli Federico II
Skills you'll gain: PyTorch (Machine Learning Library), Convolutional Neural Networks, NumPy, Image Analysis, Pandas (Python Package), Matplotlib, Artificial Neural Networks, Deep Learning, Computer Vision, Transfer Learning, Keras (Neural Network Library), Jupyter, Data Manipulation, Machine Learning Methods, Applied Machine Learning, Scikit Learn (Machine Learning Library)
★ 4.3 (9) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Feature Engineering, Dimensionality Reduction, Data Integration, Data Preprocessing, Exploratory Data Analysis, Data Visualization, Plot (Graphics), Data Compilation, Matlab, Scientific Visualization, Data Processing, Data Cleansing, Data Wrangling, Data Manipulation, Histogram, Data Transformation, Data Science, Text Mining, Predictive Modeling, Unstructured Data
★ 4.7 (351) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Data Analysis Expressions (DAX), Azure DevOps, Azure DevOps Pipelines, Power BI, Model Optimization, Data Lakes, Data Architecture, Data Modeling, Performance Tuning, Development Environment, Data Warehousing, Security Controls, Data Store, Data Storage Technologies, Process Optimization, Data Security, Application Deployment, Git (Version Control System), Data Analysis, Python Programming
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Health Policy, Cost Benefit Analysis, Data-Driven Decision-Making, Risk Modeling, Health Assessment, Analysis, Decision Making, Health Technology, Health Care, Value-Based Care, Cost Estimation, Estimation, Markov Model, Model Evaluation
★ 4.3 (25) · Intermediate · Course · 1 - 4 Weeks

Corporate Finance Institute
Skills you'll gain: Star Schema, Data Modeling, Extract, Transform, Load, Performance Tuning, Tableau Software, Model Optimization, Database Design, Data Warehousing, Data Integration
Advanced · Course · 1 - 3 Months

Skills you'll gain: Tidyverse (R Package), Rmarkdown, Predictive Modeling, Model Evaluation, File Management, R (Software), Data Governance, Responsible AI, Data Manipulation, R Programming, Research Reports, Metadata Management, Data Quality, Predictive Analytics, Data Wrangling, Data Ethics, Business Research, Statistical Reporting, Market Research, Statistical Analysis
Beginner · Course · 1 - 3 Months

Skills you'll gain: Lightweight Directory Access Protocols, Splunk, System Monitoring, Data Maintenance, Role-Based Access Control (RBAC), Authentications, Enterprise Application Management, Data Storage, Data Management, Data Infrastructure, Security Controls, Authorization (Computing), Records Management, Enterprise Security, Disaster Recovery, Identity and Access Management, Data Integrity, User Accounts, Dataflow, System Configuration
Mixed · Course · 1 - 3 Months

Northeastern University
Skills you'll gain: Data Storytelling, Generative AI, Text Mining, Data Warehousing, Unsupervised Learning, Database Design, Data Governance, Data Mining, Interactive Data Visualization, Data Presentation, Generative Model Architectures, Web Scraping, Classification Algorithms, PyTorch (Machine Learning Library), Operations Research, Natural Language Processing, NoSQL, Exploratory Data Analysis, Recurrent Neural Networks (RNNs), Time Series Analysis and Forecasting
Degree · 1 - 4 Years

Board Infinity
Skills you'll gain: Data Structures, Spring Boot, Restful API, Model View Controller, Spring Framework, Web Services, Java Programming, Java, Back-End Web Development, Authentications, Authorization (Computing), Algorithms, Application Security
★ 4.3 (163) · Advanced · Course · 1 - 4 Weeks

Fundação Instituto de Administração
Skills you'll gain: Data Visualization, Data Presentation, Business Analytics, Regression Analysis, Descriptive Statistics, Data Analysis, Data-Driven Decision-Making, Statistical Inference, Statistical Methods, Data Strategy, Analytics, Strategic Decision-Making, Statistical Analysis, Data Science, Probability & Statistics, Statistical Hypothesis Testing, Statistical Modeling, Correlation Analysis
★ 4.6 (29) · Intermediate · Course · 1 - 3 Months