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 Pennsylvania
Skills you'll gain: File I/O, Matplotlib, Object Oriented Design, Java, Object Oriented Programming (OOP), Data Analysis, Unit Testing, Pandas (Python Package), Java Programming, Plot (Graphics), Eclipse (Software), Application Development, Data Visualization, Data Structures, Data Science, Data Cleansing, Programming Principles, Computer Programming Tools, Python Programming, Computer Programming
★ 4.5 (1.9K) · Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Data Import/Export, Data Analysis, Data Visualization, Programming Principles, Python Programming
★ 4.6 (58) · Beginner · Guided Project · Less Than 2 Hours

Universidad Nacional Autónoma de México
Skills you'll gain: NoSQL, Database Systems, MongoDB, Database Software, Database Management Systems, Databases, Database Design, Relational Databases, Database Application, Query Languages, Apache Cassandra, Data Storage Technologies, Scalability, Graph Theory, Unstructured Data, Maintainability
★ 4.3 (170) · Intermediate · Course · 1 - 3 Months
University of Michigan
Skills you'll gain: Analytics, People Analytics, Data Analysis, Advanced Analytics, Business Metrics, Statistical Analysis, Statistical Programming, Descriptive Analytics, Probability & Statistics, Statistics, Python Programming, Statistical Methods, Data Manipulation
★ 4.5 (53) · Intermediate · Course · 1 - 3 Months

American Psychological Association
Skills you'll gain: Descriptive Statistics, Data Literacy, Graphing, Statistical Visualization, Statistical Hypothesis Testing, Probability & Statistics, Statistical Inference, Quantitative Research, Statistics, Statistical Analysis, Statistical Methods, Descriptive Analytics, Sample Size Determination, Data Analysis, Sampling (Statistics), Exploratory Data Analysis, Science and Research, Psychology, Bayesian Statistics, Research Design
★ 4.6 (67) · Beginner · Course · 1 - 3 Months

Johns Hopkins University
Skills you'll gain: Clinical Trials, Clinical Research, Qualitative Research, Data Synthesis, Scientific Methods, Research Methodologies, Data Collection, Research Design, Analysis, Quantitative Research, Risk Analysis, Statistical Methods, Statistical Analysis, Statistical Reporting
★ 4.8 (3.6K) · Mixed · Course · 1 - 3 Months

Skills you'll gain: Hugging Face, Prompt Engineering, Retrieval-Augmented Generation, Responsible AI, Model Evaluation, Fine-tuning, Model Deployment, Feature Engineering, LangChain, Model Optimization, Large Language Modeling, Generative Model Architectures, Generative AI, LLM Application, MLOps (Machine Learning Operations), Model Training, OpenAI API, Generative Adversarial Networks (GANs), Business Strategy, Python Programming
★ 4.1 (100) · Intermediate · Specialization · 3 - 6 Months

LearnQuest
Skills you'll gain: Responsible AI, Data Ethics, OpenAI, Artificial Intelligence, Large Language Modeling, Analytical Skills, Analysis, Game Theory, Generative AI, Predictive Modeling
★ 4.7 (380) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Prompt Engineering, Large Language Modeling, Data Preprocessing, Convolutional Neural Networks, Plot (Graphics), Generative AI, Prompt Engineering Tools, Deep Learning, Unsupervised Learning, Model Evaluation, Natural Language Processing, Responsible AI, Time Series Analysis and Forecasting, Generative Model Architectures, Transfer Learning, Supervised Learning, Data Ethics, Image Analysis, LLM Application, Recurrent Neural Networks (RNNs)
★ 4.4 (62) · Intermediate · Specialization · 3 - 6 Months
Stanford Online
Skills you'll gain: Bayesian Network, Bayesian Statistics, Machine Learning Methods, Statistical Inference, Markov Model, Statistical Machine Learning, Graph Theory, Sampling (Statistics), Applied Machine Learning, Statistical Methods, Probability & Statistics, Algorithms, Probability Distribution, Machine Learning Algorithms
★ 4.6 (491) · Advanced · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Code Reusability, Data Manipulation, Data Science, Python Programming, Programming Principles, Computer Programming, Software Engineering
★ 4.8 (58) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Exploratory Data Analysis, NumPy, Data Visualization, Data Analysis, Plot (Graphics), Seaborn, Matplotlib, Statistical Visualization, Cloud Computing, Jupyter, Dimensionality Reduction, Data Science, Unsupervised Learning, Scikit Learn (Machine Learning Library), Machine Learning Methods, Numerical Analysis, Python Programming, Data Manipulation
★ 4.6 (298) · Intermediate · Guided Project · Less Than 2 Hours