Automate Financial Ratio Analysis Using the 1.5×IQR Statistical Outlier Rule

Harness the power of the 1.5×IQR Statistical Outlier Rule to automatically calculate, analyze, and visualize your financial ratios. Simply paste two rows of data into the Excel template and click one button. The tool instantly generates a complete financial ratio analysis dashboard, including calculated ratios and a clean trend‑over‑time chart.

Behind the scenes, the built‑in 1.5×IQR outlier detection algorithm flags any unusually high or low ratios so you can spot anomalies at a glance. When you're ready to run a new scenario, just click “Start Over” to reset the template and begin another automated financial ratio analysis using the 1.5×IQR Statistical Outlier Rule.

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Note: The data analysis tools featured in the top-left corner of this blog were originally built using a custom Excel VBA outlier-detection process. I now refine and extend these tools using Microsoft Copilot to accelerate development and improve automation.