Pearson's chi-squared test

Pearson's chi-squared test is a statistical method used to determine if there is a significant difference between observed data and what we would expect based on a particular hypothesis. For example, if you want to see if people prefer different types of music, you would compare the actual responses of a group with what you would expect if there were no preference. If the differences are large enough, it suggests that preferences do exist. This test helps researchers analyze categorical data, such as survey responses, to draw conclusions about patterns or associations in general knowledge or behavior.