Is the Mexico City metro an inferior good?

摘要: Time series cointegration techniques are used to estimate whether the Mexico City metro is perceived as a normal or inferior good. Owing fact that mainly serves low income sectors of population, this paper attempts separate overall effect into two uncorrelated components: vehicle stock (used proxy for medium/high income) and minimum wage net influence income). The time results show elasticities positive whilst negative. These suggest majority users, whose salaries based on multiples not potential car owners, However, middle/high earners, who can afford buy private when their incomes increase, an