This document discusses measures of central tendency and dispersion such as mean, median, mode, range, standard deviation, and quartile deviation. It provides examples of calculating the mean, median, and mode for continuous data series. One example calculates the mean as 36.31, median as 34.5, and mode using the formula Z = 3Me - 2X as 30.88. The document also includes multiple choice questions related to relationships between averages and identifying averages based on values given. It recommends statistics textbooks for additional reference on topics discussed.