We want to find the relationship between supervisor's narcissism and subordinate's job commitment. We have collected data from 600 supervisors and 1800 subordinates reporting to them (three subordinates per supervisor). When we run the regression, will it be run on n= 600 or n = 1800. In other words, for every three subordinates, the supervisor's narcissism will be same. So can we really use n = 1800?