Rank mobility index
= Rank mobility index
{wiki=Rank_mobility_index}
The Rank Mobility Index (RMI) is a measure used in social science and economics to assess the degree of upward or downward mobility experienced by individuals or groups within a stratified social system. It helps quantify how individuals or families move between different ranks or positions in a social or economic hierarchy over time. In essence, the RMI captures how stable or fluid a social structure is concerning income, wealth, or social status.