Statistics is concerned with scientific methods for collecting organizing, summarizing, presenting, and analyzing sample data as well as drawing valid conclusions about population characteristics and making reasonable decisions on the basis of such analysis.
Statistics should deal with an aggregate of individuals rather than with individuals alone. This means that statistics does not deal with a single figure, since a single figure is incapable to produce any additional information other than itself. So, a single number is not statistical data but a collection of numbers may be statistical data. For example, "Mike" a student at a school who is 20 years old is not a statistical statement. While the set of ages of all students in the school in a statistical statement.
We can say a single number can't be statistics but the collection of numbers can be statistics.
Maybe this Difference Between Primary Data and Secondary Data article can help you to understand the basics of statistics. Explore this website for more articles on statistics. We have many informative articles on mathematics and other engineering-related topics.