The Internet Use data file on the text CD contains data on the number of individuals with
Question:
a. The MINITAB output shows a scatterplot. Describe this plot in terms of the variability of broadband subscribers for nations with low GDP.
b. Give the approximate x - and y -coordinates for the nation that has the highest number of broadband subscribers.
c. Use software to calculate the correlation coefficient between the two variables. What is the sign of the coefficient? Explain what the sign means in the context of the problem.
d. Identify one nation that appears to have fewer broadband subscribers than you might expect based on that nations GDP, and one that appears to have more.
e. If you recalculated the correlation coefficient after removing the two observations you identified in part d, how would you expect the resulting coefficient to compare to the one obtained in part c?
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Related Book For
Statistics The Art And Science Of Learning From Data
ISBN: 9780321755940
3rd Edition
Authors: Alan Agresti, Christine A. Franklin
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