TABLE 14-1
A manager of a product sales group believes the number of sales made by an employee (Y) depends on how many years that employee has been with the company (X₁) and how he/she scored on a business aptitude test (X₂) . A random sample of 8 employees provides the following: 
-Referring to Table 14-1, for these data, what is the estimated coefficient for the variable representing scores on the aptitude test, b₂?
Definitions:
Diagnostic And Statistical Manual
The Diagnostic and Statistical Manual of Mental Disorders (DSM) is a comprehensive classification of officially recognized psychiatric disorders, used by clinicians for diagnosis and research.
WWI Recruits
Individuals who were enlisted or conscripted into military service during World War I.
Inkblot Test
A projective psychological test where individuals interpret the meanings of a series of inkblots, used to explore their emotions and personality characteristics.
Objective Personality
An approach to personality assessment that uses standardized measures to evaluate personality traits without subjective judgment.
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