After you have the centers of the distribution, the next interesting question is how spread the values are. Do you have a very homogeneous sample, where the vast majority of the values is close to the mean, or do you have a lot of data far away on both sides of the center?
The range is the simplest measure of the spread; it is just the difference between the maximal value and the minimal value of a variable. Writing this definition as a formula is shown here:
In R, you can simply use the min() and the max() function from the base installation to calculate the range.
min(Age)max(Age)range(Age)
The result is 70. Here is ...
