Bispectrum

A bispectrum is a type of mathematical tool that can help us study the patterns in data like weather, stock prices, or population growth. It works by looking at three numbers at a time, which are called "frequencies". A frequency is a measure of how often something happens over a certain amount of time. For example, if it rains three times in one month, the frequency of rain is three times. The bispectrum looks at groups of three frequencies to look for patterns in the data. The patterns it finds can tell us a lot about the data, like what time of year things occur more often or how the data changes over time.