Beyond 2 SDs
What Does It Mean to Be More Than 2 Standard Deviations from the Mean?

Understand what data points more than 2 standard deviations from the mean signify and how they indicate outliers in a normal distribution.

Data Variability Explained
What Is a Good Number of Standard Deviations in Data Analysis?

Learn why 1-2 standard deviations indicate typical data variability and when more than 2 suggests outliers or high variability.