Baseline study Fish, fry and commercial fishery Nysted Offshore ...

Bio/consult as Page 174
Grouping species from the fish study.
POWER stationary May
Alpha = 0.050
Power = 0.800
Model = Twoway
Number of rows = 2
Number of columns = 2
Within cell S.D. = 0.948
Effect(01) = 0.000
Effect(02) = 0.000
Effect(03) = 0.000
Effect(04) = 0.700
Effect Size = 0.320
Estimate to be based on interaction effects.
Noncentrality parameter = 0.409 * sample
size
SAMPLE
SIZE POWER
(per cell)
9 0.461
10 0.504
11 0.544
12 0.582
13 0.618
14 0.652
15 0.683
16 0.712
17 0.738
18 0.763
19 0.786
20 0.806
Total Sample Size = 80
Power
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
Power Curve (Alpha = 0.050)
0.2
0 10 20 30 40 50
Sample Size
POWER stationary June
Alpha = 0.050
Power = 0.800
Model = Twoway
Number of rows = 2
Number of columns = 2
Within cell S.D. = 0.787
Effect(01) = 0.000
Effect(02) = 0.000
Effect(03) = 0.000
Effect(04) = 0.700
Effect Size = 0.385
Estimate to be based on interaction effects.
Noncentrality parameter = 0.593 * sample
size
SAMPLE
SIZE POWER
(per cell)
3 0.218
4 0.294
5 0.367
6 0.435
7 0.498
8 0.557
9 0.611
10 0.659
11 0.703
12 0.742
13 0.777
14 0.807
Total Sample Size = 56
Power Curve (Alpha = 0.050)
0.2
0 5 10 15 20 25 30 35
Sample Size
SEAS. Baseline study – Fish, fry and commercial fishery Dok. nr. 2148-03-001-rev3 2P.doc
Power
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3