Percentiles are used to analyze data by dividing it into 100 equal parts, with each part representing a specific percentage. However, there are a few synonyms for the word percentiles that can be used interchangeably to impart the same meaning. These synonyms include deciles, quartiles, and quintiles. All of these terms relate to a specific division of data, usually used in statistics and data analysis. Deciles refer to dividing data into 10 equal parts, quartiles into four parts, and quintiles into five equal parts. These terms are often used to describe the distribution of data in a set and help researchers to identify trends and patterns.