Frequency 
24 
22 
20 
18 
16 
Emax = 45 000cm2 
14 — ay 
RE. = 11,250,000°'9% mp2 
! 
(equivalent to a sinusoidal wave 
10 2.12 meters high) 
8 
6 
4 
S (| unit equal to 6.6 ft.) 
Math 
-1,795-1395-0995-0595-0195 0020506051005 1405 1805 2,205 2605 Limits 
Histogram of samples from a wave record for 5-l4-48 
0000 to 0007 EST, Long Branch, New Jersey. x? = 23. 
with 8 degrees of freedom — Eliminate last group.x?=78 
with 7 degrees of freedom. 35 out of 100 times sample 
could come from normal distribution. 
Frequency 
20 
E pmax= 601.5 cm? 
(| unit equal to 6in.) 
Math 
-27495-22495-17495-12495-749524.05 0 2505 750512505 1750522505 2750532505 Limits 
Histogram of samples from pressure record for !0-18-5l, 
2258 to 2323 ES.1., Long Branch, New Jersey. x*=9.128 with 
9 degrees of freedom. 43 out of 100 times sample could 
come from normal distribution. 
Fig.14. Histograms of wave height and pressure amplitude distributions 
from sample records. 
—141- 
