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.

Tsinghua University
Skills you'll gain: Data Structures, Algorithms, Computational Thinking, Theoretical Computer Science, Computer Programming, Data Storage
★ 3.1 (34) · Intermediate · Course · 1 - 3 Months

The University of Edinburgh
Skills you'll gain: Precision Medicine, Bioinformatics, Biostatistics, Image Analysis, Medical Imaging, Process Modeling, Data Science, Applied Machine Learning, Data Ethics, Health Informatics, Machine Learning Methods, Statistical Modeling, Network Model, Statistical Methods, Data Analysis, Machine Learning, Natural Language Processing, Probability & Statistics, Clinical Documentation, Python Programming
★ 4.6 (341) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Extract, Transform, Load, Apache Spark, Data Pipelines, Data Integration, Big Data, Data Processing, Data Management
★ 4.5 (10) · Beginner · Course · 1 - 4 Weeks

University of California, Irvine
Skills you'll gain: Data Storytelling, Dashboard Creation, Dashboard, Data Presentation, Data Visualization, Data Visualization Software, Interactive Data Visualization, Statistical Visualization, Plot (Graphics), Data Literacy, Tableau Software, Data Ethics, Exploratory Data Analysis, Descriptive Statistics, Data Analysis, Visual Storytelling, Market Data, Descriptive Analytics, Geospatial Information and Technology, Data Mapping
★ 4 (31) · Beginner · Specialization · 1 - 3 Months

Skills you'll gain: Model Deployment, Google Cloud Platform, Dataflow, Dashboard Creation, Data Pipelines, Data Warehousing, Data Lakes, Real Time Data, Data Processing, Dashboard, Cloud Engineering, Tensorflow, Data Infrastructure, Data Preprocessing, Apache Spark, Big Data, Model Training, Extract, Transform, Load, Applied Machine Learning, Apache Airflow
Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Data Warehousing, Extract, Transform, Load, Data Pipelines, Linux Commands, SQL, IBM Cognos Analytics, Apache Kafka, Bash (Scripting Language), Apache Airflow, Shell Script, IBM DB2, Data Transformation, Data Visualization, Dashboard, File Management, Dashboard Creation, Star Schema, Database Management, Relational Databases, Stored Procedure
★ 4.6 (25K) · Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Data Structures, Graph Theory, Algorithms, Java, Java Programming, Data Management, Secure Coding, Theoretical Computer Science, Programming Principles, Other Programming Languages, Performance Tuning, Computer Programming
★ 3.6 (13) · Intermediate · Specialization · 1 - 3 Months

EDUCBA
Skills you'll gain: Data Lakes, Microsoft Azure, Stored Procedure, Data Architecture, Performance Tuning, Data Management, Query Languages, Data Manipulation, Scripting, SQL, Data Processing, Windows PowerShell, Microsoft Visual Studio, Command-Line Interface, Heat Maps
★ 5 (11) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Splunk, Dashboard, Dashboard Creation, Plot (Graphics), Business Intelligence, Scatter Plots, Data Visualization Software, Data-Driven Decision-Making, Interactive Data Visualization, Data Visualization, Software Installation, Business Intelligence Software, Real Time Data, Case Studies, Trend Analysis, Event Monitoring, Transaction Processing, System Configuration, Correlation Analysis, Statistical Analysis
Mixed · Course · 1 - 3 Months

Skills you'll gain: Apache Hive, Database Management, SQL, Database Management Systems, Data Store, Big Data, Amazon Web Services, Databases, Data Management, Amazon S3, Data Storage, Data Access, Query Languages, Data Storage Technologies, Cloud Storage, Extract, Transform, Load, Data Import/Export, Performance Tuning, File Systems, Metadata Management
★ 4.7 (299) · Beginner · Course · 1 - 3 Months

Logical Operations
Skills you'll gain: Jupyter, Software Installation, System Configuration, Package and Software Management, Virtual Machines, Data Science, Pandas (Python Package), Data Processing, NumPy, Computer Programming Tools, Virtualization and Virtual Machines, Matplotlib, Data Analysis, Python Programming, Seaborn, Software Development, Computer Programming
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Time Series Analysis and Forecasting, Recurrent Neural Networks (RNNs), SAS (Software), Forecasting, Regression Analysis, Machine Learning Methods, Applied Machine Learning, Statistical Analysis, Statistical Methods, Data Analysis Software, Predictive Modeling, Statistical Modeling, Statistical Software, Bayesian Statistics, Model Evaluation
Intermediate · Course · 1 - 3 Months