Types of Statistics
Statistics can be further divided into two subcategories: descriptive statistics and inferential statistics.
Descriptive statistics are used to describe a collection of data. For example, the average age of people in a country is a descriptive statistics indicator that describes an aspect of the country's residents. Descriptive statistics on a single variable in a dataset are called univariate analysis, while descriptive statistics that look at two or more variables at the same time are called multivariate analysis. In particular, statistics that look at two variables are called bivariate analysis. The average age of a country is an example of univariate analysis, while an analysis examining the interaction between GDP per capita, healthcare spending per capita, and age is multivariate analysis.
In contrast, inferential statistics allows datasets to be collected as a sample or a small portion of measurements from a larger group, called a population....