Normal Distribution - GCSE Psychology Definition

A normal distribution is a way of showing data that looks like a smooth, bell-shaped curve when graphed. It helps us understand how scores or measurements are spread out in a group. Most values cluster around the middle and fewer are found at the extremes, meaning most people will have an average score, with only some scoring very high or very low.

In GCSE Psychology, this is important because it helps to predict behaviours or characteristics by showing what is typical within a population. The most common example is how most people's IQ scores are close to the average, with very few people having extremely high or low scores.