VARIABILITY IN TRAWL CATCHES 



163 



TABLES 



Table 1. — Distribution of values af x 2 for paired tow 

 catches of haddock, whiting, common skate, and total fish 



[Only hauls with ni+m>9 are included] 



Table 2. — Values of total and mean x 2 f or haddock tows 



of different sizes 



[Only hauls with ni+7i!>9 are included] 



Table 3. — Distribution of catches per tow of haddock at 

 two-tow stations 



Table 4. — Observed catch of haddock at two-tow stations 

 and catch expected on the hypothesis of a negative binomial 

 distribution 



Table 5. — Observed catch of haddock and catch expected 

 on the hypothesis of a negative binomial distribution, 

 depth zones, I, II, and III 



Table 6. — Observed catch of common skate (Raja erinacea) 

 and catch expected on the hypothesis of a negative binomial 

 distribution, depth zones I, II, and III combined 



