Locally Weighted Scatterplot Smoothing (LOWESS)

Locally Weighted Scatterplot Smoothing (LOWESS) is a statistical tool used to create a smooth line through a set of data points on a graph. It works by examining small neighborhoods around each point and fitting simple lines or curves that best capture the data trends nearby. These local fits are then combined to produce a smooth overall trend line. LOWESS is flexible and adapts to complex patterns in the data, making it useful for visualizing relationships without assuming a specific mathematical model. It effectively highlights underlying patterns while reducing the noise from irregular fluctuations.