The next measure of central tendency is the median, the value that is in the exact middle of the sample. The median
is the point at which half of the subjects lie above this value and half of the subjects lie below it. For example, the ages
of the nine subjects in sample 1 of Table 5 are arranged in numeric order. The fifth age, 45, is in the exact middle of
the sample; consequently, age 45 is the median. The median is a better measure of central tendency than mode
because it is not influenced by an accidental grouping of values away from the true center of the data. However, the
median cannot be determined for nominal level data because no order is present within the data