BAYLIFF: INTEGRITY OF SKIPJACK TUNA SCHOOLS 



from this program is shown in Table 3. It can be seen 

 that the sum of 39.40 + 6.41 + 1.00 + 0.16 + 0.02 

 (last line) is equal to 47, the number of sets, and that 

 the sum of (39.40 x 0) + (6.41 x 1) + (1.00 x 2) 

 + (0.16 X 3) is equal to 9, the number of tagged fish 

 returned. (The numbers of tagged fish returned for 

 each set had been entered in Table 3, column 4, as 

 explained above. If the total, 9, had been entered 

 for the first set, or any other set, however, the result 



in the bottom line would have been the same.) 



The bottom lines from all the outputs from 

 SCHOOL for tagging cruise 1079 are listed in the 

 "exp." (expected) lines of Table 4. Just below these 

 are listed the observed ("obs.") numbers of sets with 

 0, 1, 2, 3, . . . tagged fish. At the bottom of each sec- 

 tion of this table the sums of the expected and ob- 

 served values are listed. Chi-square tests were run, 

 using MINITAB (Ryan et al. 1985), on the expected 



Table 3 —Probabilities of 0, 1, 2, 3, 10 tagged fish in sets made in August in the area shown in Figure 1 from fish released on 17 

 June 1976. This table is similar to the output from program SCHOOL except that (1) normally the lines for the individual sets are not 

 printed and (2) the output does not include the numbers of fish. 



635 



