The most basic, yet most central, statistical concept for psychological measurement is
A) correlation
B) prediction
C) variability
D) factor analysis

Question

Quizplus · Accepted Answer

Variability is the most basic statistical concept for psychological measurement as it relates to the extent to which scores on a measure vary across individuals or across time. It is essential in understanding and interpreting psychological test scores and is important for making inferences about a population based on a sample. Correlation and prediction are also important concepts, but they build upon variability. Factor analysis is a useful tool for exploring the underlying structure of a set of variables but is not as fundamental a concept as variability.

The Most Basic, Yet Most Central, Statistical Concept for Psychological