Statistics: The Art and Science of Learning from Data (4th Edition)

4th Edition

ISBN: 9780321997838

Author: Alan Agresti, Christine A. Franklin, Bernhard Klingenberg

Publisher: PEARSON

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Chapter 15, Problem 34CP

Multiple choice Nonparametric statistical methods are used

a. Whenever the response variable is known to have a normal distribution.
b. Whenever the assumptions for a parametric method are not perfectly satisfied.
c. When the data are ranks for the subjects rather than quantitative measurements or when it’s inappropriate to assume normality and the ordinary statistical method is not robust when the normal assumption is violated.
d. Whenever we want to compare two methods for getting a good tan.

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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Chapter 15, Problem 33CP

Chapter 15, Problem 35CP

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Chapter 15 Solutions

Statistics: The Art and Science of Learning from Data (4th Edition)

Ch. 15.1 - Prob. 1PB Ch. 15.1 - Prob. 2PB Ch. 15.1 - Prob. 3PB Ch. 15.1 - Prob. 4PB Ch. 15.1 - Prob. 5PB Ch. 15.1 - Prob. 6PB Ch. 15.1 - Prob. 7PB Ch. 15.2 - How long do you tolerate being put on hold?...Ch. 15.2 - Prob. 9PB Ch. 15.2 - Prob. 10PB

Ch. 15.2 - Cell phones and reaction times Example 13 in...Ch. 15.2 - Sign lest for GRR scores Consider Example 8, for...Ch. 15.2 - Prob. 13PB Ch. 15.2 - More on blood pressure Refer to the previous...Ch. 15.2 - Prob. 15PB Ch. 15.2 - Prob. 16PB Ch. 15 - Car bumper damage An automobile company compares...Ch. 15 - Comparing more bumpers Refer to the previous...Ch. 15 - Telephone holding times In Exercise 15.8, the...Ch. 15 - Treating alcoholics The nonparametric statistics...Ch. 15 - Comparing tans Examples 1 and 2 compared two...Ch. 15 - Comparing therapies for anorexia The Anorexia data...Ch. 15 - Internet versus cell phones For the countries in...Ch. 15 - Prob. 24CP Ch. 15 - GPAs The Georgia Student Survey data file has data...Ch. 15 - Prob. 26CP Ch. 15 - Prob. 27CP Ch. 15 - Student survey For the FL Student Survey data file...Ch. 15 - Prob. 29CP Ch. 15 - Prob. 30CP Ch. 15 - Complete the analogy The t test for comparing two...Ch. 15 - Prob. 32CP Ch. 15 - True or false For a one-sided significance test...Ch. 15 - Multiple choice Nonparametric statistical methods...Ch. 15 - Prob. 35CP Ch. 15 - Prob. 36CP Ch. 15 - Prob. 37CP

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Solution Summary: The author explains why it is preferable to use nonparametric methods instead of parametric methods.

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