To prove the extent, Serena must present the statistics.
What is Statistics?
The study of statistics focuses on gathering, organizing, organizing, analyzing, interpreting, and presenting data.
Statistics is customary to start with a statistical population or a statistical model to be researched when applying statistics to a scientific, industrial, or social problem.
Populations can refer to a variety of groupings of individuals or things, such as "every individual living in a nation" or "each atom making up a crystal."
Every facet of data, including the planning of data collecting in terms of the layout of surveys and experiments, is covered by statistics.
When census data cannot be gathered, statisticians devise specialized experiment designs and survey samples to get data.
A representative sample ensures that generalizations and inferences from the sample to the entire population are reasonable.
To learn more about statistics with the given link