Mean. The mean is a measure of central tendency. Mean is a mathematical average, which involves
adding together the raw data and dividing the sum by the number of individual data. In the example,
James added together all of the salaries of the companies that he researched ($31,205 + $29,995 +
$34,800 +$42,500 + $36,500 = $175,000). Then Jack divided the sum by the number of individual
salaries in the set of data ($175,000 ÷ 5 = $35,000). The mode of a set of numbers is the value that
appears most often in the set. The range is the difference between the largest and the smallest number
in the data set. The median is the exact middle of a data set. In the example, $34,800 is the median of
the data set.