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Solved: College students by state. Refer to Exercise 2.21

Introduction to the Practice of Statistics: w/CrunchIt/EESEE Access Card | 8th Edition | ISBN: 9781464158933 | Authors: David S. Moore, George P. McCabe, Bruce A. Craig ISBN: 9781464158933 206

Solution for problem 2.98 Chapter 2

Introduction to the Practice of Statistics: w/CrunchIt/EESEE Access Card | 8th Edition

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Introduction to the Practice of Statistics: w/CrunchIt/EESEE Access Card | 8th Edition | ISBN: 9781464158933 | Authors: David S. Moore, George P. McCabe, Bruce A. Craig

Introduction to the Practice of Statistics: w/CrunchIt/EESEE Access Card | 8th Edition

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Problem 2.98

College students by state. Refer to Exercise 2.21 (page 99), where you examined the relationship between the number of undergraduate college students and the populations for the 50 states. (a) Make a scatterplot of the data with the least-squares regression line. (b) Plot the residuals versus population. (c) Focus on California, the state with the largest population. Is this state an outlier when you consider only the distribution of population? Explain your answer and describe what graphical and numerical summaries you used as the basis for your conclusion. (d) Is California an outlier in the distribution of undergraduate college students? Explain your answer and describe what graphical and numerical summaries you used as the basis for your conclusion. (e) Is California an outlier when viewed in terms of the relationship between number of undergraduate college students and population? Explain your answer and describe what graphical and numerical summaries you used as the basis for your conclusion. (f) Is California influential in terms of the relationship between number of undergraduate college students and population? Explain your answer and describe what graphical and numerical summaries you used as the basis for your conclusion

Step-by-Step Solution:
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Chapter 1 Section 1 Variable-a characteristic/attribute that can assume different values Data- values that the variables can assume Population- all subjects undergoing a study Parameter- measure obtained from the population data  Uses Greek Letters to categorize Sample- a group selected from the population, to make the study more concentrated Statistic- a measure that is obtained from the sample data  Uses the Alphabet to categorize Descriptive Statistics- the collection, organization as well as summarization of data  Basically sums up what you’ve collected and makes it easier to understand Inferential Statistics- generalizes a known sample data to the unknown population data 

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Chapter 2, Problem 2.98 is Solved
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Textbook: Introduction to the Practice of Statistics: w/CrunchIt/EESEE Access Card
Edition: 8
Author: David S. Moore, George P. McCabe, Bruce A. Craig
ISBN: 9781464158933

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Solved: College students by state. Refer to Exercise 2.21