Mathematics, 18.10.2019 21:00 deanlmartin
Acollege job placement office collected data about students’ gpas and the salaries they earned in their first jobs after graduation. the mean gpa was 2.9 with a standard deviation of 0.4. starting salaries had a mean of $47200 with a sd of $8500. the correlation between the two variables was r = 0.72. the association appeared to be linear in the scatterplot. a) write an equation of the model that can predict salary based on gpa and find the slope and intercept. 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? c) what proportion of the variation in salaries is explained by variation in gpa?
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Acollege job placement office collected data about students’ gpas and the salaries they earned in th...
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