If we use 
to estimate 
, then the residual for predicting yi is:
Definitions:
Jobs
Positions of employment where individuals are hired to perform specific duties in exchange for compensation.
Voluntary Certification
A process where individuals or organizations choose to undergo a review of their practices or products by an external body to assure certain standards.
Quebec
A province in Canada known for its unique French heritage, culture, and language within the predominantly English-speaking country.
Buffer
Buffer is a protective barrier or cushioning mechanism that mitigates the negative impact of environmental changes or stressors, often used in the context of stress management.
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