Adriana completed an analysis to assess the job success of employees hired from top universities compared to those hired from lower-tier schools. She found a correlation of -.75 (negative point 75) when comparing results, indicating: that employees from lower-tier schools actually performed better than their counterparts from top schools an error in her correlation coefficients a college degree is a strong indicator of job performance for all employees there is no correlation between the quality of an employee's college and their job success proof that better universities contributed to greater job success