This document provides information about various statistical measures calculated from a data set of math exam scores of a 12th grade class. It defines mode as the most frequent score (75), median as the middle score (82), mean as the average score (77), range as the difference between highest and lowest scores (95-57=38), variance as a measure of deviation from the mean (119.53), standard deviation as the square root of variance (10.93), and quartiles as divisions of the data into four equal parts (1st quartile: 75, 2nd quartile: 82, 3rd quartile: 86). The interquartile range is defined as the difference between the third and first quartiles (