TABLE 14-2
A professor of industrial relations believes that an individual's wage rate at a factory (Y) depends on his performance rating (X1) and the number of economics courses the employee successfully completed in college (X2) .The professor randomly selects 6 workers and collects the following information: 
-Referring to Table 14-2,for these data,what is the estimated coefficient for performance rating,b1?
Definitions:
Vertebrates
Animals that possess a backbone or spinal column, including fishes, amphibians, reptiles, birds, and mammals.
Hemichordata
A phylum of marine animals that share some traits with chordates, such as a dorsal nerve cord, but have distinct features like a stomochord.
Larval Tunicates
The juvenile stage of tunicates (marine invertebrates), which is free-swimming and undergoes metamorphosis into the adult form.
Superficially Resemble
To appear similar or alike on the surface, but possibly different in more profound or structural aspects.
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