Traits in the model

k

AIC

Δ_{i}

Likelihoods

w
_{
i
}

Evidence Ratio


Preferred model

7

893.91

0

1

0.6066
 
Head Height

8

895.7

1.79

0.4099

0.2478

2.4473

Tail Muscle Height

9

897.69

3.78

0.151

0.0916

6.6194

Head Height^{2}

10

899.81

5.9

0.0523

0.0317

19.106

Tail Muscle Height^{2}

11

901.23

7.32

0.0257

0.0156

38.8613

Tail Fin Height^{2}

12

902.95

9.04

0.0108

0.0066

91.8356

 AIC score = Akaike Information Criterion; Δ_{
I
} = difference in AIC scores between the best model and subsequent model; w_{
i
} = normalized relative likelihood of the model given the data; Evidence Ratio = the relative odds that a model is the best given the data. The first row of the table represents the preferred model, which includes linear terms for Head Length, Tail Length, and Tailfin Height, and quadratic terms for Head Length and Tail Length (see Table 4). Subsequent rows show the influence of adding each indicated trait in succession. Traits labeled with a superscript "2" represent quadratic terms.