frequency polygon

A frequency polygon is a type of graph used to display the distribution of a dataset. It is created by plotting points at the midpoints of each data interval (or class) on a horizontal axis, with their heights corresponding to the frequency (or number of occurrences) in each interval. These points are then connected with straight lines, forming a shape that shows how the data is spread out. This visual helps to quickly identify patterns such as peaks, gaps, or overall trends in the data, making it easier to analyze the distribution visually.