THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
Consider the following (x,y)sample data: (40,13),(15,33),(16,42),(39,9),(20,38),(35,15),(25,21),(34,17),(20,24),and (34,21). 
-Calculate the variances 
and 
,and the covariance sxy of the sample data.
Definitions:
Predictability
The ability to foretell future events or behaviors based on patterns or known information.
Standardization
The process of developing and implementing technical standards to ensure consistency, safety, and interoperability of products and services.
George Ritzer
George Ritzer is a prominent American sociologist known for his contributions to consumer culture theory, globalization, and his concept of McDonaldization.
McDonaldization
The process by which the principles of the fast-food industry, such as efficiency and standardization, have come to dominate other sectors of society.
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