Extended Data Fig. 5: Relationship Between Friends’ Socioeconomic Status and Own Socioeconomic Status.

This figure plots the mean socioeconomic status (SES) percentile rank of individuals’ friends against their own SES percentile rank. The series in green circles is calculated using the entire friendship network for each individual. The series in orange squares is constructed using each individual’s ten closest friends, based on the frequency of public interactions such as likes, tags, wall posts, and comments. The green and orange series are identical to those in Fig. 1 of Chetty et al.⁷. The series in purple triangles replicates the series in green circles using the 30% of friendships that we are able to assign to a group, the primary analysis sample used in this paper. For each series, we report slopes estimated from a linear regression on the plotted points, with heteroskedasticity-robust standard errors in parentheses.