One possible explanation for why some birds migrate and others maintain year round resi single location is intelligence. Specifically, birds with small brains, relative to their body si simply not smart enough to find food during winter and must migrate to warmer climates food is easily available (Sol, Lefebvre, & Rodriguez-Teijeiro, 2005). Birds with bigger brain other hand, are more creative and can find food even when the weather turns harsh. Fll hypothetical data similar to the actual research results. The numbers represent relative b

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One possible explanation for why some birds migrate and others maintain year round residency in a
single location is intelligence. Specifically, birds with small brains, relative to their body size, are
simply not smart enough to find food during winter and must migrate to warmer climates where
food is easily available (Sol, Lefebvre, & Rodriguez-Teijeiro, 2005). Birds with bigger brains, on the
other hand, are more creative and can find food even when the weather turns harsh. Following are
hypothetical data similar to the actual research results. The numbers represent relative brain size for
the individual birds in each sample:
Non-Migrating
Short Distance Migrants
Long Distance Migrants
18
6
13
11
19
7
5
12
6
16
8
5
12
13
7
M = 15
M = 9
M = 6
%3D
T= 90
T= 54
T= 36
%3D
SS = 48
SS = 34
SS = 16
N = 18
G = 180
%3D
Ex² = 2150
Use an ANOVA with a= .05 to determine whether there are any significant mean differences among
the three groups of birds.
Transcribed Image Text:One possible explanation for why some birds migrate and others maintain year round residency in a single location is intelligence. Specifically, birds with small brains, relative to their body size, are simply not smart enough to find food during winter and must migrate to warmer climates where food is easily available (Sol, Lefebvre, & Rodriguez-Teijeiro, 2005). Birds with bigger brains, on the other hand, are more creative and can find food even when the weather turns harsh. Following are hypothetical data similar to the actual research results. The numbers represent relative brain size for the individual birds in each sample: Non-Migrating Short Distance Migrants Long Distance Migrants 18 6 13 11 19 7 5 12 6 16 8 5 12 13 7 M = 15 M = 9 M = 6 %3D T= 90 T= 54 T= 36 %3D SS = 48 SS = 34 SS = 16 N = 18 G = 180 %3D Ex² = 2150 Use an ANOVA with a= .05 to determine whether there are any significant mean differences among the three groups of birds.
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