Examlex
For absolute purchasing power parity to exist, the products must be identical.
Abstract Concepts
Ideas that do not have a physical, tangible reality and are often complex, such as justice, love, or freedom.
Factor Analysis
A statistical method used to describe variability among observed, correlated variables in terms of a potentially lower number of unobserved variables called factors.
Flynn Effect
The observed rise over time in standardized intelligence test scores, attributed to various factors such as improved nutrition, education, and environment.
Standardization
Defining meaningful scores by comparison with the performance of a pretested group.