Move = 0 - .005 Mc - .002 Yh + .007 Sh - .012 R - .001 A + .068 U - .001 (Y,/Yh) where Move = 1 if moved; 0 if did not move Me = number of children Yh = head's earnings Sh = head's schooling R = 1 if relatives reside in the area; 0 if no relatives in the area A = head's age U = 1 if unemployed at original location; 0 if employed at original location Y /Yh = ratio of wife to husband earnings Data source: University of Michigan Panel Study of Income Dynamics 1. Do older people have a higher probability of geographic mobility? Why