Table 11. — Chi-square analysis of yellowfin catches by hook 

 depth, John R. banning Cruise 11. 



Hypothesis ; The population of yellowfin tuna is homogeneously dis- 

 tributed with respect to depth} therefore a Islsl ratio 

 is expected from the three depth zones. 



Conclusions % The Leant interaction ^ of 37.772 (d.f. 18, P.<0.01) 



indicates the data are not consistent; therefore the pooled 

 values cannot be accepted without reservation. 



-I c '^t,innE lumped to give minimum e3 I id numbers of about 5< 

 * indicates d significant (P<0.05) chi-square value. 



ndicates a highly significant (P<0.01) chi-square value. 



20 



