Table 2 Analysis of phonotaxis direction for a whine with two spatially separated chucks in natural temporal sequence.

From: Relative comparisons of call parameters enable auditory grouping in frogs

Chuck angles (re. whine 0°)

n

Mean exit angle (±95%CI)

Vector ( r)

Raleigh test ( P)

Directed to closest chuck position ( P)

Compared with grouping single chuck ( P)

Closest

Distant

      

0°

None

18

358° (9)

0.946

<0.0001

<0.0001

Null Ho

0°

45°

24

10° (8)

0.947

<0.0001

<0.0001

0.091

0°

90°

23

20° (22)

0.741

<0.0001

<0.0001

0.085

0°

135°

22

24° (45)

0.525

<0.0001

<0.001

0.185

0°

180°

17

8° (26)

0.75

<0.0001

<0.0001

0.688

Same

45°

None

24

35° (16)

0.844

<0.0001

<0.0001

Null Ho

45°

90°

20

31° (14)

0.877

<0.0001

<0.0001

0.751

45°

135°

20

31° (10)

0.927

<0.0001

<0.0001

0.736

45°

180°

24

34° (17)

0.809

<0.0001

<0.0001

0.963

Opposite

45°

90°

25

29° (35)

0.570

<0.001

>0.1

<0.0002

45°

135°

20

338° (13)

0.873

<0.0001

<0.0005

0.251

  1. Columns are the spatial separation of single or a pair of chucks (re. whine); number of females (n); mean (±95% confidence interval) exit angle; vector strength of the exit distribution; Raleigh test for random distribution; V-test of whether the exit angle distribution is localized to the position of the chuck closest to the whine; Watson–Williams test for difference between the exit distribution for single whine-chuck at 0° or 45° separation vs that for a pair of chucks with closest chuck at 0° or 45°. The exit angle distribution for the null hypothesis at 45° was previously collected27. The spatially separated chucks are either on the same or opposite sides of the whine (Fig. 3).
Back to article page