Table 7. Linear regressi 



lines fitted to the beach volume trends and statistical sienificance of the 27-nionth trends. 

 September 1974 to November 1976 

 (See Section III, 6 for explanation and App. B) 



Profile line 



Estimated 

 coefficient 



Y Intercept 



T Statistic 



Rl 



Significance^ 



Trend' 



1 



6.40 



-2053.81 



7.47 



0.67 



0.001 



* 



2 



0.14 



- 88.76 



0.26 



0.001 



0.80 



* 



3 



-3.02 



914.63 



-3.80 



0.33 



0.001 



- 



4 



-0.50 



233.36 



-0.78 



0.02 



0.50 



- 



5 



0.14 



- 74.65 



0.34 



0.001 



0.75 



* 



6 



-2.94 



790.22 



-5.39 



0.50 



0.001 



- 



7 



0.73 



- 195.27 



1.56 



0.08 



0.20 



* 



8 



0.17 



- 51.78 



0.24 



0.001 



0.95 



* 



9 



-2.16 



524.26 



-4.48 



0.41 



0.001 



- 



10 



0.92 



- 305.47 



2.23 



0.16 



0.05 



* 



11 



-2. IS 



586.32 



-3.85 



0.36 



0.001 



- 



12 



2.47 



- 241.60 



0.37 



0.01 



0.70 



* 



13 



0.84 



- 404.56 



1.68 



0.09 



0.25 



* 



14 



1.61 



- 573.04 



3.01 



0.24 



0.01 



* 



15 



0.72 



- 308.91 



1.59 



0.08 



0.20 



* 



16 



2.15 



- 619.17 



3.50 



0.29 



0.01 



* 



17 



0.40 



- 130.00 



1.01 



0.03 



0.40 



* 



18 



1.65 



- 544.24 



3.25 



0.26 



0.01 



* 



^The lower the number, the higher the significance; e.g., 0.001 indicates that the erosion or 

 accretion trend is n ot due to chance at the 99.9 percent level. 



55 



