The Analysis of Biological Data
2nd Edition
ISBN: 9781936221486
Author: Michael C. Whitlock, Dolph Schluter
Publisher: W. H. Freeman
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Chapter 2, Problem 28AP
(a)
To determine
To explain: Displaying of the results in a table
(b)
To determine
To explain: Displaying of the results in a graph
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An ornithologist thinks that injections of follicle-stimulating hormone (FSH) increase the singing rate of his captive male cotingas (birds). To test this hypothesis, he randomly selects 20 singing cotingas and divides them into two groups of 10 birds each. The first group receives injections of FSH and the second gets injections of saline solution, as a control for the trauma of receiving an injection. He then records the singing rate (in songs per hour) for both groups. The results are given in the following table. Note that two of the FSH birds escaped during injection and were not replaced.
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In northern Europe, there are two species of flycatcher: the collared flycatcher and the pied flycatcher that sometimes hybridizes (I.e. a male from one species will mate with a female of the other species). A study done by Veen et al. 2001 measured the frequencies of different combinations of mated pairs within and between species. Do males and females mate indiscriminately, independent of species? The numbers of pairs observed are listed in the following table:
Female collared
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5567
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Male pied
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172
What is the appropriate analysis for this dataset and research question?
A.poisson analysis
b.chi-squared goodness of fit
c.binomial test
d.chi-squared analysis of independence
e.odds/risk ratio
What is our df and critical value for this analysis?
To test the effect of a new exercise routine on muscle growth, a researcher sets up the following experiment: 60 volunteers subjects (40 men and 20 women) of average build are selected to participate in the study. Their body mass and muscle sizes (biceps, thighs, etc.) are measured. The researcher gives all the men a DVD with the new exercise routine, and the women a DVD with a standard routine, but only the researcher knows this.The results of the experiment are likely to be invalid mostly because
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None of the above
Chapter 2 Solutions
The Analysis of Biological Data
Ch. 2 - Prob. 1PPCh. 2 - Prob. 2PPCh. 2 - Prob. 3PPCh. 2 - Prob. 4PPCh. 2 - Prob. 5PPCh. 2 - Prob. 6PPCh. 2 - Prob. 7PPCh. 2 - Prob. 8PPCh. 2 - Prob. 9PPCh. 2 - Prob. 10PP
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