a)–c) Marginal likelihoods computed using Eq. (13) for models M^P, M^L, and M^G as a function of the period ratio for different values of the uncertainty, with σ = 0.2 (dashed), σ = 0.4 (solid), and σ = 0.8 (dotted). d) The three marginal likelihoods computed for a fixed value of σ = 0.4: p(r | M^P) as a dashed line, p(r | M^G) as a dotted line, and p(r | M^L) as a solid line. In all plots, χ ∈ [ 2,500 ].