Mean, Median, and Mode Calculator - enter numbers separated by comma and then calculate. Measures of Center - Lesson and practice. Medians - understand and apply the concepts of median and mean. Party Comedian - find and use the median of a set of data. Party Mode - find and use the mode of a set of data. Use appropriate measure of center and spread when outliers are not present - In this video lesson you will learn to use the appropriate measure of center and measure of spread by analyzing data.