The Anderson-Darling test evaluates whether a sample follows a specific distribution, typically normal. It gives more weight to tail behaviour than other tests, making it sensitive to subtle deviations.

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This tutorial explains how log transformation can correct non-normal data, helping restore normality for valid statistical analysis—especially useful with skewed data or small sample sizes.

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Data Insights and Predictive Text Plans

What is S&P 500? The Standard and Poor's 500, or simply the S&P 500, is a stock market index tracking the stock performance of 500 leading companies listed on stock exchanges in the United States.It is one of the most commonly followed equity indices and includes approximately 80% of the total market capitalization of U.S. public companies. In better terms, it is like a report card for the United States Stock Market by showing how big, important companies are doing overall in finance. It only tracks the top 500 largest publicly traded Companies in the USA. (Source: Wikipedia 2025)