Now we turn our attention to the numbers we can calculate to describe these distributions.
These numbers can be grouped into two types of measures:
Measures of Central Tendency and Measures of Variability.
Measures of central tendency describe the middle, such as the mean and median
or most frequent values of a distribution, such as the mode
Measures of variability describe whether the values are spread out or clumped together.
Low variability means that the numbers are all close to each other
and high variability means the numbers are spread out from each other