Measures of central tendency are statistics that describe where the middle of the sample lies. The lowest level measure
of central tendency is the mode. The mode is the value most frequently occurring within the dataset. A mode can be used
with all levels of measurement and is the primary measure of central tendency available for nominal level data. When
examining the number of patients with trauma, cardiac, or other medical problems, the category having the most
patients represents the mode. If evaluating the ages of a sample, the age represented by the most subjects is the mode.