Table 1. ANCOVA of intracolumnar profile shape predicted by ecological groups (ecology) with heart position as a covariate (f1 = intracolumnar profile ~ heart position * ecology). Where intracolumnar profile is the x,y coordinates of vertebra position and cumulative relative size as seen in Figure 3. Degrees of freedom (d.f.), sum of squares (SS), mean square (MS), coefficient of determination (R 2), test statistic (F), effect size (Z), and P -value based upon the F statistic (Pr) for each factor are provided
| d.f. | SS | MS | R 2 | F | Z | Pr |
|---|
| Heart position | 1 | 1825.858 | 1825.858 | 0.016972 | 0.670 818 | 0.264 306 | 0.412 |
|---|
| Ecology | 1 | 14 155.92 | 14 155.92 | 0.131 583 | 5.20 087 | 1.80 986 | 0.024 |
|---|
| Heart position: ecology | 1 | 15 388.28 | 15 388.28 | 0.143 038 | 5.653 638 | 1.779 306 | 0.032 |
|---|
| Residuals | 28 | 76 211.41 | 2721.836 | 0.708 407 | | | |
|---|
| Total | 31 | 107 581.5 | | | | | |
|---|
(f1 = intracolumnar profile ~ heart position * ecology). Where intracolumnar profile is the x,y coordinates of vertebra position and cumulative relative size as seen in Figure 3. Degrees of freedom (d.f.), sum of squares (SS), mean square (MS), coefficient of determination (R 2), test statistic (F), effect size (Z), and P -value based upon the F statistic (Pr) for each factor are provided