The purpose of is to summarize and explain a specific set of data

descriptive Statistics.

Explanation:

Descriptive statistics is the branch of Mathematical Statistics that deals with methods for organizing numerical information for better interpretation.

Descriptive statistics imply the abstraction of several properties of the sets of observations, through the use of graphical, tabular or numerical methods. Among these properties are the frequency with which several values ​​are given in the observation, the notion of a typical or usual value, the amount of variability in a set of observed data and the measure of relationships between 2 or more variables.

The field of descriptive statistics has nothing to do with the implications or conclusions that can be derived from the data sets. Descriptive statistics serve as a method to organize data and highlight its essential characteristics in order to reach conclusions.

The presentation of statistical information can be done in the following ways:

Textual (in the form of text).

Picture.

Graphics.

answer; (a) calling people who have not shown interest in the product and asking them to buy it;