expected values. An asterisk by the sample number indicates 

 that the hypothesis was rejected by that particular sample 

 according to the conditions of the previous paragraph. 

 Comments on the type of noise (clean, biological, ship noise, 

 etc. ) in the sample are also given. The number of noise 

 samples that were found to be significant are listed by lo- 

 cation in table 3. Note that the shallow -water locations 

 have many more non-gaussian samples than the deep-water 

 North Pacific location. 



TABLE 3. LOCATIONS OF CURVES SHOWING SIGNIFICANT VALUES OF 

 SKEWNESS AND KURTOSIS AT 1 AND 5 PER CENT PROBABILITY LEVELS. 





g, (SKEWNESS) 



g 2 (KURTOSIS) 



NO. OF 

 CURVES 



NO. OF 



LOCATION 



5% 



1% 



5% 



1% 



SAMPLES 



SHALLOW, 

 SO. CALIF. 



2 







8 



5 



29 



9 



SHALLOW, 

 ALASKA 



1 



1 



7 



5 



24 



9 



NORTH 

 PACIFIC 











3 



2 



65 



8 



SAN DIEGO 

 (SHIP NOISE 

 IN HARBOR) 



4 



3 



8 



4 



36 



9 



If the hypothesis that the noise samples are taken 

 from a gaussian distribution is true, then it is expected 

 that one sample in 20 may have significant parameters at 

 the 5 per cent level. If it is not true, it is expected that 

 more than one sample in 20 may have significant parameters. 



Table 3 shows that the values of skewness for the 

 first three locations are well within the expected number, 

 except perhaps for the Southern California location, where 

 two samples out of 29 were found with significant amounts 

 of skewness. However, since this location had considerable 



32 



