Statistical Analysis of Solidness of Black area on P6-P10

c 2 Test

Major groupings:

 

Sample

%P6-P10 solid black triangle

South-ern

atlantis

Iberian

atlantis

Atl-Med

Intersection

atlantis/micha-hellis

SW Spain

micha-hellis

N Spain

cant-abricans

SW England argen-teus

Southern

atlantis

241

86.6

X

0.01

23.5

(-

1.9)

(-

0.3)

0.01

103.9

0.01

90.6

Iberian

atlantis

86

61.6

 

X

-

0.7

(-

3.2)

0.01

29.8

0.01

25.2

Atl-Med

Intersection

atlantis/micha-hellis

23

74.8

 

 

X

(-

1.9)

0.01

27.8

0.01

23.9

SW Spain

michahellis

8

100.0

 

 

 

X

(0.01

30.4)

(0.01

26.0)

N Spain

cantabricans

28

0.0

 

 

 

 

X

(-

0.0)

SW England argenteus

23

0.0

 

 

 

 

 

X

W Canaries vs E Canaries:

 

Sample

%P6-P10 solid black triangle

W Canary

E Canary

W Canary

35

96.2

X

0.05

4.2

E Canary

110

80.5

 

X

Note:

Significance is shown above the chi-square test-result in each cell; degree of freedom =1 in each case; ( 3.84 <= chi-square < 6.63) for significance 0.05 (shown in green) and chi-square >= 6.63 for significance 0.01 (shown in red). Brackets indicate that one or more expected values in the test was less than the recommended 5. Statistics following Statistics for Ornithologists, Jim Fowler and Louis Cohen, BTO Guide 22 (undated).

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