SOCI 3P11 Study Guide - Final Guide: Technology In Revelation Space, Statistical Inference, Point Estimation

• School: Brock University
• Department: Sociology
• Course: SOCI 3P11
• Professor: Jonah Butovsky

Document Summary

Types of variables, measures of central tendency, displaying data in. Percentiles divide a set of data into hundredths. If you know the percentile that a value falls in then you know how many percent of the cases fall below this percentile. To find the location of a given percentile, multiply the percentile you want by n- 1, then add 1, where n is the number of cases in the group. percentile/100 * (n-1)+1 (order of operations says add 1 last) This gives you the location of the x percentile. The lower quartile is the (n+1) observation. The median, as you know, is the (n+1)/2 observation. The upper quartile is the (n+1) observation. Quartiles divide the data into 4 equal chunks . The 25th percentile is known as the lower quartile, the 50th percentile is the median and the 75th percentile is known as the upper quartile.