Data Science Tutorials

Learn how to use Haystack's dataclasses, components, document store, generator, retriever, pipeline, tools, and agents to build an agentic workflow that will help you invoke multiple tools based on user queries.

Discover how to perform a sensitivity analysis in Excel, a popular “what-if” method used to identify the most relevant inputs in a model outcome.

Learn how to create Python progress bars using tqdm, progressbar2, alive-progress, and Tkinter, with best practices for better UX and app performance.

Learn how to use the OpenAI O3 API for complex, multi-step problem-solving involving visual and textual input, and manage reasoning costs.

Learn how to use the Fill Handle in Excel to copy formulas, extend data patterns, customize AutoFill options, and troubleshoot common issues with step-by-step guidance and examples.

Learn different methods to rearrange your spreadsheet by moving single or multiple columns in Excel. Discover practical shortcuts, hidden tricks, and expert tools to speed up your workflow.

Learn how to use Qwen-Agent and Qwen3 to build a real-time webpage summarizer extension.

Understand why the #SPILL! error appears when using dynamic arrays in Excel. Learn how to fix it, prevent it, and make the most of Excel’s array formulas.

Power BI users from Excel always find out that Power BI does not have a native COUNTIF() function. This article will show various ways to implement COUNTIF() in Power BI and its practical use cases.

Master the power of Git branches for smoother development and better collaboration.

Learn how to use n8n to build AI agents that automate email processing and create a retrieval-augmented generation (RAG) agent for document question answering.

Learn about the various lookup functions in Excel and how they are applied through examples.