Find the slope of the simple regression of Y on X. 
Definitions:
Pre-Employment Test
Standardized assessments given to candidates before hiring to evaluate their suitability for a job based on specific criteria.
Job Knowledge
The understanding and expertise a person has regarding the tasks, processes, and responsibilities specific to a particular job or profession.
Behavioral Interview
A method of interviewing that assesses candidates' past actions and behavior patterns to predict their future performance.
Traditional Interview
A conventional method of job selection involving face-to-face conversation between the interviewer and the candidate, focusing on assessing the candidate's suitability.
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