This chapter discusses measures of central tendency including the mode, median, and mean. The mode is the most common value, the median is the middle value, and the mean is the average. It provides examples of calculating each measure and discusses considerations for choosing the appropriate measure based on the variable's level of measurement and distribution shape. Key factors include using the mode only for nominal variables, the median or mode for ordinal variables, and mean, median or mode for interval/ratio variables, with the median preferred for skewed distributions.