N (Normal Distribution)

The normal distribution, often called a bell curve, is a way to describe how data points tend to spread around an average value. Most results cluster near the middle, and fewer outcomes appear as you move farther away. This pattern is common in nature and daily life—such as heights, test scores, or measurement errors. The curve is symmetrical, meaning the left and right sides mirror each other. It helps us understand variability and predict the likelihood of different outcomes, making it a fundamental concept in statistics and data analysis.