Data Science Tutorials

Use t-tests when dealing with small samples or unknown variance, and Z-tests when samples are large and variance is known.

Hypothesis testing is a statistical method used to evaluate claims about populations based on sample data.

Discover how to use \n to insert line breaks in strings and print() statements. Use the end parameter to keep your output on a single line. Improve your file handling skills with os.linesep for managing text across different systems.

Discover how to perform Count Distinct in Tableau using the Measure Names Shelf and Calculated Fields. Explore COUNTD() and FIXED LOD expressions for more advanced calculations.

Learn the foundational principles, applications, and practical benefits of variational autoencoders and follow a step-by-step implementation with PyTorch.

Understand how to copy lists in Python. Learn how to use the copy() and list() functions. Discover the difference between shallow and deep copies.

The if __name__ == "__main__" block in Python allows you to define code that will only run when the file is executed directly as a script, but not when it's imported as a module into another script.

Learn how to set up PyTorch’s torchchat locally with Python in this hands-on tutorial, which provides step-by-step guidance and examples.

Get started with Apple's DCLM-7B large language model and learn how to set it up, use it, and fine-tune it for specific tasks.

Learn about QR decomposition, the matrix factorization technique that decomposes matrix A into the product of an orthogonal matrix Q and an upper triangular matrix R.

Learn how to round a number to two decimal places in Python using round(), f-strings, format(), the decimal module, NumPy, and more — with a method comparison table.

Learn how to use SQL triggers to automate tasks, maintain data integrity, and enhance database performance. Try practical examples like the CREATE, ALTER, and DROP commands in MySQL and Oracle.