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Data Science Tutorials

Develop your data science skills with tutorials in our blog. We cover everything from intricate data visualizations in Tableau to version control features in Git.
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R

R mean() Function: Get Started with Averages

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.
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Josef Waples

June 19, 2025

Excel

Excel TEXTJOIN(): Combine Text in Excel

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

June 18, 2025

Large Language Models

Fine-Tuning Magistral: A Step-By-Step Guide

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

June 17, 2025

Excel

Compress Excel File: Fixes for Sluggish or Oversized Spreadsheets

Are you having trouble with slow Excel workbooks or large files that are hard to share? This guide shows you simple and advanced ways to reduce Excel file size, improve performance, and make collaboration easier.
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Jachimma Christian

June 17, 2025

Excel

Excel New Line in Cell: Easy Ways to Insert Line Breaks

Discover quick methods to start a new line in an Excel cell using keyboard shortcuts, formulas, and Find & Replace. Learn platform-specific tips for Windows, Mac, and web-based Excel versions.
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Oluseye Jeremiah

June 17, 2025

Snowflake

INSERT INTO in Snowflake: A Complete Beginner’s Guide

Learn how to efficiently insert data into Snowflake tables using the INSERT INTO statement. This guide covers syntax, use cases, best practices, and troubleshooting techniques.
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Tim Lu

June 16, 2025

Data Science

Hessian Matrix: A Guide to Second-Order Derivatives in Optimization and Beyond

Understand the role of the Hessian matrix in multivariable calculus and optimization. Learn how it’s used to analyze curvature, locate critical points, and guide algorithms in machine learning.
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Vidhi Chugh

June 16, 2025

Excel

How to Use Excel CONCAT(): A Quick Guide

Learn how to merge text, numbers, and cell ranges in Excel, reduce manual entry, and keep your data tidy and well-organized.
Josef Waples's photo

Josef Waples

June 16, 2025