Consider the following three stocks: 
The price-weighted index constructed with the three stocks is
Definitions:
Variability
The extent to which data points in a statistical distribution or dataset differ from each other and from the central tendency.
Directionality
The characteristic of a relationship in statistics that indicates if one variable increases as the other variable increases or decreases.
American Psychological Association
A professional organization representing psychologists in the United States, also known for its publication standards for research.
Bar Charts
A graphical representation of data using bars of different heights or lengths to compare various categories.
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