AleFrontier

Portfolio

Synthetic case studies showing the starting condition, checks applied, cleaning decisions, and expected outputs for practical Excel and CSV workflows. All examples use invented data only; no customer or source data is published.

  • Sample Case: Cleaning a Messy Orders CSV

    Sample Case: Cleaning a Messy Orders CSV Disclaimer: This is a synthetic example created for demonstration and learning purposes, using entirely invented data and scenarios. Messy CSV files blur the picture. Clean rows and consistent formats make decisions sharper. This case walks through a small orders file and shows how a simple, disciplined Diagnose →…

  • How to Audit a Messy CSV Before You Clean It

    Messy CSV files lead to messy decisions. Before you fix anything, you need to see what you are actually working with. This guide walks you through a quick, practical audit so you know what is broken before you start cleaning. 1. Check the Column Structure Start by looking at the shape of the file, not…