A bell curve, also known as a normal distribution, is a statistical concept that represents data distribution in a symmetrical, bell-shaped graph. It is widely used in various fields, including finance, education, and human resources, to analyze performance, trends, and probabilities. The highest point in the curve represents the mean, median, and mode, indicating that most data points cluster around the center. As you move away from the center, the frequency of values gradually decreases, forming the characteristic bell shape. In HR and performance management, the bell curve is often used to