Summary statistics for sc_bwt2008 dataset : by Jean Roth , jroth@nber.org , 10 May 2016 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- srvy_yr | 8,815 2008 0 2008 2008 hhx | 0 fmx | 0 fpx | 0 totoz_p | 8,815 199.2762 257.8966 18 999 -------------+--------------------------------------------------------- bwtgrm_p | 8,815 3933.599 2035.867 500 9999 by Jean Roth , jroth@nber.org , 10 May 2016