Problem
Salary and the mark for HSBS124 unit have been obtained for 100 recent graduates of PEC School of IT. A linear regression model has been used to analyse the data. A linear model y = 1100 * x + 4000 has been obtained, where x is the HSBS124 final mark in percent and y is the salary in Australian dollars. What is the predicted salary of a recent graduate with the final mark of 55%? What is the value of residual, if the true measured salary for this graduate is AU$52,000? What are the applicability limits for this model?