TABLE V
Means, Variances, Dispersion, and Confidence Intervals of Nymphal Density
1
2
3
4
5
6
7
8
Standard
Number
Mean
Coefficient
95% Range of
of
number of
of
coefficient of
deviation
Confidence
Year
funnels
nymphs/m2 Variance
dispersion
dispersion
of mean
intervals
1953
1954
1955
1956
1957
i95S
1959
1960
1961
1962
1963
1964
52
52
52
52
51
60
99
99
98
100
97
89
2.54
3 *46
3-23
4.13
0.73
0.968
1.828
3.1 18
4.188
4.298
0.818
. - ,
1 'a*
3-67
5 -43
4-55
6.78
1.08
2.06
1.18
2.03
4.29
7 *24
6 -92
0.97
1 4 4
1-57
1 *41
1 *64
1 *48
i * i 2
1-23
1.12
1-38
1.73
1.61
1.20
0.60 - 1.40
0.60 - 1.40
0.60 - 1.40
0.60 - 1.40
0.60 - 1.40
3.59 - i . 4 i
0.71 - 1.29
0.71 - 1.29
0.71 - 1.29
0.72 - 1.28
0.71 - 1.29
0.70 - 1.30
0.27
0.32
0.30
0-36
0.15
0.11
0.14
0.21
0.27
0.27
0.10
A o n
V . & W
2.01 - 3.07
2.84 - 4.12
2.64 - 3.86
3.42 - 4.85
0.43 - 1.02
. 1 1 0 . 0 .
1 -?t* - Y Y %
0.74 - 1.17
1.53 - 2.10
2.70 - 3.53
3.66 - 4.70
3.73 - 4.85
0.61 - 1.01