Table 4

Descriptive statistics of internodal regression analysis

Residuals

Regression

r²

sample variance

F ratio and significance

n

range

mean of absolute residuals

Z value and significance

b-fib7 X RAG-1

non-Charadriiformes

0.56

308.7

3.811

82

111.9

12.7

2.853

Charadriiformes

0.77

81.0

P < 0.001

45

42.9

6.7

P < 0.005

ADH-5 X RAG-1

non-Charadriiformes

0.29

426.0

8.192

19

91.4

15.5

3.779

Charadriiformes

0.67

52.0

P < 0.001

43

33.3

5.5

P < 0.001

GPD3-5 X RAG-1

non-Charadriiformes

0.13

605.5

7.915

19

101.5

17.3

3.468

Charadriiformes

0.42

76.5

P < 0.001

32

39.0

6.4

P < 0.001

myo-2 X RAG-1

non-Charadriiformes

0.31

210.7

5.077

66

80.6

11.0

4.706

Charadriiformes

0.10

41.5

P < 0.001

27

26.2

4.2

P < 0.001

Fain and Houde BMC Evolutionary Biology 2007 7:35   doi:10.1186/1471-2148-7-35