This preview shows page 1. Sign up to view the full content.
Unformatted text preview: Calculating Percentiles: 1. Arrange data in ascending order 2. Compute index “i” i= (P/100)n n=sample 3. If “i” is not an integer, then round up (pth percentile). If “i” is an integer, then pth percentile is the average of “i” and i+1 Measures of Variability Range : Largest Value – Smallest Value Interquartile Range (IQR): IQR = Q 3-Q 1 Standard Deviation : (SD) measures how far a number on a list is away from the list average...
View Full Document
This note was uploaded on 04/08/2008 for the course PSTAT 5E taught by Professor Eduardomontoya during the Spring '08 term at UCSB.
- Spring '08