Descriptive Statistics: Numerical MethodsChapter 3Descriptive Statistics: Numerical MethodsLearning Objectives1.Understand the purpose of measures of location.2.Be able to compute the mean, median, mode, quartiles, and various percentiles.3.Understand the purpose of measures of variability.4.Be able to compute the range, interquartile range, variance, standard deviation, and coefficient of variation.5.Understand how z scores are computed and how they are used a