Sometimes data is given in summarized format of a frequency or relative frequency distribution instead of as a list of individual values/characteristics. As such, can one find our measures of center f...Sometimes data is given in summarized format of a frequency or relative frequency distribution instead of as a list of individual values/characteristics. As such, can one find our measures of center from such summarized format of the data? This section investigates that possibility in regard to the median and the arithmetic mean measures. Then, a short extension to the concept of "weighted" means is also discussed.