Question 1
The Spearman’s rank correlation coefficient is a nonparametric indicator of:
◦
the similarity between two independent samples.
◦
the correlation between the ranks of two variables.
◦
any relationship between the ranks of two or more variables.
◦
departure from normality.
Question 2
The total number of words per page is recorded from a random sample of 17 pages printed using a standard font and from 20 pages using a new font. A Wilcoxon rank-sum test is performed, and the sum of the ranks of the standard font sample (sample 1) is 301 (i.e., W = 301). Using a normal approximation, does the new font appear to increase the median number of words per page? Assume the number of words per page can be modeled as a continuous variable. Select the correctp-value and decision. (Useα= 0.05.)
◦
p= 0.9920, fail to rejectH0
◦
p= 0.0080, rejectH0
◦
p= 0.2514, fail to rejectH0
◦
p= 0.7486, fail to rejectH0
Differences in the number and location of flagella.
Changes in chromosome number
Sample Program for Changing Daily Caloric Intake
Self-Esteem in a Longitudinal Sample
One page of color vision chart.
Sample prescriptions of drugs for oral fungal infections.