Table 3. RMA regressions of raw data and standardized independent contrasts for the radius.

	RMA regression: Raw data						RMA regression: Independent Contrasts
RLRAPW	n	R-squared	p(uncorr)	a	b	p(a = 1)	n	R-squared	p(uncorr)	a	p(a = 1)
Ankylosauria	8	0.608	0.022	0.846	−0.387	0.501	5	0.003	0.928	0.642	0.173
Stegosauria	10	0.552	0.014	1.064	−0.983	0.806	2	–	–	–	–
Hadrosauridae	28	0.885	0	1.156	−1.541	0.053	18	0.839	0	1.078	0.376
Ceratopsidae	14	0.285	0.048	0.976	−0.736	0.921	7	0.814	0.005	1.504	0.062
Bipeds	5	0.931	0.008	1.32	−1.644	0.208	–	–	–	–	–
Thyreophora	18	0.653	0	0.848	−0.405	0.24	8	0.04	0.634	0.656	0.08
Ornithopoda	51	0.801	0	1.035	−1.132	0.603	32	0.872	0	1.081	0.137
Marginocephalia	17	0.601	0	1.344	−1.66	0.138	10	0.936	0	1.595	0.002
Ornithischia	88	0.671	0	1.14	−1.303	0.051	54	0.815	0	1.157	0.004
RLRMLW
Ankylosauria	8	0.154	0.336	−0.74	3.711	0.001	5	0.003	0.933	−0.65	0.006
Stegosauria	10	0.107	0.357	1.456	−1.854	0.376	2	–	–	–	–
Hadrosauridae	28	0.764	0	1.223	−1.587	0.067	18	0.542	0	1.303	0.105
Ceratopsidae	14	0.04	0.493	1.422	−1.878	0.315	7	0.137	0.413	1.985	0.19
Bipeds	5	0.605	0.122	0.743	−0.344	0.411	–	–	–	–	–
Thyreophora	18	0.062	0.321	1.012	−0.688	0.962	8	0.028	0.695	−0.61	0
Ornithopoda	51	0.769	0	1.089	−1.152	0.242	32	0.594	0	1.171	0.118
Marginocephalia	17	0.263	0.035	1.305	−1.581	0.308	10	0.362	0.066	1.511	0.177
Ornithischia	88	0.6	0	1.16	−1.244	0.051	54	0.532	0	1.168	0.07

Abbreviations: RLRAPW, radial length against anteroposterior width; RLRMLW; radial length against mediolateral width; a, allometric coefficient; b, y-intercept; n, sample size; p(a = 1), probability that the allometric coefficient is equal to isometry, cells highlighted in bold are those that are statistically distinguishable from isometry at the p = 0.05 level; p(uncorr), probability that X and Y are uncorrelated, cells highlighted in bold are those where X and Y are uncorrelated at the p = 0.05 level; R-squared, coefficient of determination.