24 
SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 1 52 
Table 2. — Chi-square analyses of sample pairs. The actual number of individuals 
observed is columned under (O). The expected frequency (e) of a species in a 
sample is calculated by multiplying the sum of the species row by the sum of 
the sample column and dividing by the total sum of both samples. Chi-square is 
calculated by the formula 
SAMPLE PAIR 259-259' 
Live Population 
259 
259' 
259 
259' 
(o-e) 2 
(o-e)* 
0 
0 
Total 
e 
e 
e 
e 
Ammonia beccarii 
40 
22 
62 
45.37 
16.65 
.64 
1.72 
Eggerella advena 
25 
4 
29 
21.21 
7.78 
.68 
1.84 
Elphidium clavatum 
7 
5 
12 
8.78 
3.22 
.36 
.98 
Elphidium incertum 
15 
4 
19 
13.90 
5.10 
.09 
.24 
Elphidium margaritaceum 
16 
0 
16 
11.70 
4.30 
1.58 
4.30 
Elphidium subarcticum 
Pseudopolymorphina 
19 
12 
31 
22.67 
8.32 
.59 
1.63 
novangliae 
6 
0 
6 
4.39 
1.61 
.59 
1.61 
Total 
128 
47 
175 
128.02 
46.98 
4.53 
12.32 
2 
*6 = 
16.85* 
SAMPLE PAIR 259-259' 
Total Population 
259 
259' 
259 
259' 
(o-e)* 
( 0 — e) 2 
0 
0 
Total 
e 
e 
e 
e 
Ammonia beccarii 
66 
72 
138 
73.72 
64.28 
.81 
.93 
Buccella frigida 
4 
2 
6 
3.20 
2.79 
.20 
.22 
Eggerella advena 
28 
36 
64 
34.19 
29.81 
1.12 
1.28 
Elphidium clavatum 
11 
9 
20 
10.68 
9.32 
.01 
.01 
Elphidium incertum 
16 
7 
23 
12.29 
10.71 
1.12 
1.28 
Elphidium margaritaceum 
37 
22 
59 
31.52 
27.48 
.95 
1.09 
Elphidium subarcticum 
30 
35 
65 
34.72 
30.28 
.64 
.74 
Miliammina fusca 
Pseudopolymorphina 
5 
1 
6 
3.20 
2.79 
1.01 
1.15 
novangliae 
8 
0 
8 
4.27 
3.73 
3.26 
3.73 
Quinqueloculina seminula 
6 
0 
6 
3.20 
2.79 
2.45 
2.79 
Total 211 184 395 210.38 183.98 11.57 13.22 
x \ — 24.79* 
* Significant at 95% level. 
