It is an ordered sequence.
arithmetic
That's an infinite list.
A sequence.
An ordered list.
Chronological order An ordered list of numbers is a "numerical sequence".
sequence
It is an ordered sequence.
The center value in a list of numbers is the Median average of the numbers. If there is an even number of items in the list, then the Median average is the Mean average of the two numbers in the center.
Mean
number line?
arithmetic
The number that falls in the middle of a list of numbers is the median.
Sequence
That's an infinite list.
A sequence.
An ordered list.