TABLE 13-3
The director of cooperative education at a state college wants to examine the effect of cooperative education job experience on marketability in the work place. She takes a random sample of 4 students. For these 4, she finds out how many times each had a cooperative education job and how many job offers they received upon graduation. These data are presented in the table below. 
-Referring to Table 13-3, the least squares estimate of the slope is ________.
Definitions:
Manufactured Goods
Items that have been processed from raw materials into finished products through human or machine labor.
Slaveholders
Individuals or entities that owned one or more slaves, maintaining control over their lives, labor, and freedom.
European Immigrants
Individuals from Europe who have moved to another country, historically significant in the context of migration to the Americas, Australia, and other regions.
Railroad Development
The period of rapid expansion and construction of railroads, significantly influencing economic growth, settlement patterns, and regional connectivity.
Q30: Referring to Table 12-4, the calculated value
Q44: Referring to Table 12-7, what are the
Q72: Referring to Table 14-4, one individual in
Q85: Referring to Table 13-4, set up a
Q124: Referring to Table 13-13, the degrees of
Q130: Referring to Table 13-3, the standard error
Q146: Referring to Table 14-15, there is sufficient
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Q204: Referring to Table 10-13, which of the
Q355: Referring to Table 14-10, the residual mean