Stats: Modeling the World Nasta Edition Grades 9-12

3rd Edition

ISBN: 9780131359581

Author: David E. Bock, Paul F. Velleman, Richard D. De Veaux

Publisher: PEARSON

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.

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Question

Chapter 10, Problem 8E

(a)

To determine

To Explain: the reason to re-express these data before trying to fit a model.

(a)

Expert Solution

Explanation of Solution

Given:

Stats: Modeling the World Nasta Edition Grades 9-12, Chapter 10, Problem 8E , additional homework tip 1

By seeing the figure, it is noticed that the there is relationship between GDP and Crowdedness which negative and curved. Therefore re-expression should be used before trying to fit a model.

(b)

To determine

To find: the re-expression of GDP for starting point.

(b)

Expert Solution

Explanation of Solution

Given:

Stats: Modeling the World Nasta Edition Grades 9-12, Chapter 10, Problem 8E , additional homework tip 2

By seeing the scatter plot is observed that the all GDP’s in the figure is non-negative. So log could be used to re-expression of GDP as starting. It might plot the relationship more straighten.

Chapter 10, Problem 7E

Chapter 10, Problem 9E

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