Diagnostics of mass segregation in the young Orion nebula cluster (ONC) using observational data from Hillenbrand (1997). Top: Γ_MST and Λ_MST for the 5, 10, 20, 50, 100, 200, 500 most massive, and all 929 stars (left to right). Bottom: Γ_MST and Λ_MST for the 5, 6 to 10, 11 to 20, 21 to 50, 51 to 100, 101 to 200, 201 to 500, and 500 to 929 most massive stars (left to right). The error bars and line thickness mark the 1σ, 2σ, and 3σ uncertainties.