To find: the explanatory and response variables and explain whether they are categorical or quantitative
Explanation of Solution
Given: Treating breast cancer
Consider a study of treating breast cancer performed by a medical center to determine which of the given two treatments is most effective. The purpose of either procedure is to prolong the life of the patient.
The study will certainly record the survival time of each patient. This really is the outcome of the study: survival time is the response variable. Now, each patient will get one of the two types of treatments; this is a second variable. Let’s call it the “Procedure” variable; it takes one of two possible values, Treatment 1(removal of the breast) and Treatment 2(remove only the tumor and nearby lymph nodes). The entire purpose of the study is to determine how, if at all, the treatment affects survival time.
Type of treatment is an explanatory variable. Type of treatment (explanatory variable or predictor) is used to identify survival time (response or predicted variable). Here, the dependent variable is survival time and the independent variable is treatment. After the explanatory, the response is measured.
Chapter 3 Solutions
The Practice of Statistics for AP - 4th Edition
Additional Math Textbook Solutions
Introductory Statistics
Basic Business Statistics, Student Value Edition
Elementary Statistics: Picturing the World (7th Edition)
Statistics: The Art and Science of Learning from Data (4th Edition)
Essentials of Statistics, Books a la Carte Edition (5th Edition)
- MATLAB: An Introduction with ApplicationsStatisticsISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons IncProbability and Statistics for Engineering and th...StatisticsISBN:9781305251809Author:Jay L. DevorePublisher:Cengage LearningStatistics for The Behavioral Sciences (MindTap C...StatisticsISBN:9781305504912Author:Frederick J Gravetter, Larry B. WallnauPublisher:Cengage Learning
- Elementary Statistics: Picturing the World (7th E...StatisticsISBN:9780134683416Author:Ron Larson, Betsy FarberPublisher:PEARSONThe Basic Practice of StatisticsStatisticsISBN:9781319042578Author:David S. Moore, William I. Notz, Michael A. FlignerPublisher:W. H. FreemanIntroduction to the Practice of StatisticsStatisticsISBN:9781319013387Author:David S. Moore, George P. McCabe, Bruce A. CraigPublisher:W. H. Freeman