Question

One possible explanation for why some birds migrate and others maintain year round residency in a single location is intelligence (measured as brain-to-body ratio). Specifically, birds with smaller brain, relative to their body size, are not simply smart enough to find food during the winter and must migrate to warmer climates where food is easily available. Birds with bigger brains, on the other hand, are more creative and can find food even when the weather turns harsh. This study compared non-migrating birds and long-distance migrants in terms of relative brain size.

Which of the tests indicated above should be used?

a. Independent Samples t-test
b. Repeated measures t-test
c. One-way ANOVA
d. Regression
e. Correlation
f. One-sample t-test
g. z-test

Answer 1

An Independent Samples t-test should be used to analyze the brain-to-body ratio between non-migrating birds and long-distance migrants to see if the differences are statistically significant.

Step-by-step explanation:

The appropriate statistical test to analyze the brain-to-body ratio between non-migrating birds and long-distance migrants is an Independent Samples t-test. This test is used when comparing the means of two independent groups to determine if there is a statistically significant difference between them. In this case, the two groups are the non-migrating birds and the long-distance migrants, and the variable of interest is the relative brain size.