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spayn [35]
3 years ago
15

Will give brainliest

Mathematics
1 answer:
Mariana [72]3 years ago
4 0

9 feet hope this helps!!! :D may i have brainliest?

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86°

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A college job placement office collected data about students’ GPAs and the salaries they earned in their first jobs after gradua
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X is the GPA

Y is the Salary

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a)y = a+bx

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Intercept =  2830

So, equation : y = 2830+15300x

b) Your brother just graduated from that college with a GPA of 3.30. He tells you that based on this model the residual for his pay is -$1880. What salary is he earning?

y = 2830+15300 \times 3.3 = 53320

Observed salary = Residual + predicted = -1860+53320 = 51440

c)) What proportion of the variation in salaries is explained by variation in GPA?

The proportion of the variation in salaries is explained by variation in GPA = r^2 = (0.72)^2 =0.5184

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3 years ago
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