Multivariate analysis is a statistical technique used to analyze data sets containing multiple variables simultaneously. This type of analysis allows researchers to understand the relationships and interactions between different variables in a dataset. It is used in various fields such as psychology, economics, biology, and sociology to identify patterns and trends within the data. Multivariate analysis techniques include factor analysis, cluster analysis, principal component analysis, and multivariate regression analysis. These methods help researchers to better understand complex data sets and make informed decisions based on the results.