Question: nto how many equal parts do percentiles divide data into?
1. The problem asks: Into how many equal parts do percentiles divide data?
2. Percentiles divide data into 100 equal parts.
3. This is because the term "percentile" comes from "percent," meaning per hundred.
4. Each percentile represents 1% of the data distribution.
5. Therefore, the data is divided into 100 equal parts by percentiles.
Final answer: 100