Data Science Tutorials

Learn how to use the Python len() function to quickly find the size of strings, lists, dictionaries, and other data structures. Discover practical examples and common mistakes to avoid when working with len() in your own code.

Learn how to measure variability in your data using the R sd() function. Discover practical examples and essential techniques for handling missing values and grouped data.

Learn how collections are created in MongoDB, when to define them explicitly, and key configuration options.

An honest walkthrough of SageMaker Studio Lab—from setting up to running real ML projects—perfect for students, educators, and developers who want a powerful, free development environment.

Learn how the probability mass function defines discrete probability distributions. Explore its properties, examples, and differences from probability density functions.

Learn how to quickly find the middle value of your data using the R median() function. Discover tips for handling missing values and grouping data by categories.

Calculate the average of numeric, logical, and weighted data using R’s built-in mean functions. Understand how to handle missing values and apply the function to vectors and data frames.

Learn what RMSE means in regression analysis, how to calculate it, and when to use it to assess model performance. See Python and R examples with practical interpretations.

Learn about Google’s Project Mariner through real-world examples and a breakdown of its strengths and weaknesses.

Set up a full-stack deep AI research assistant, featuring a React frontend and a LangGraph backend.

Combine cell values smoothly with TEXTJOIN(). Handle delimiters, skip blanks, and simplify your data assembly in Excel.

Step-by-step guide to fine-tuning the Mistral reasoning model on a medical MCQs dataset using the Transformers framework.