Introduction To Statistics And Data Analysis

6th Edition

ISBN: 9781337793612

Author: PECK, Roxy.

Publisher: Cengage Learning,

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Correlation

Correlation defines a relationship between two independent variables. It tells the degree to which variables move in relation to each other. When two sets of data are related to each other, there is a correlation between them.

Linear Correlation

A correlation is used to determine the relationships between numerical and categorical variables. In other words, it is an indicator of how things are connected to one another. The correlation analysis is the study of how variables are related.

Regression Analysis

Regression analysis is a statistical method in which it estimates the relationship between a dependent variable and one or more independent variable. In simple terms dependent variable is called as outcome variable and independent variable is called as p…

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Textbook Question

Chapter 4.3, Problem 41E

The article “The Best—and Worst—Places to be a Working Woman” (The Economist, Graphic Detail for March 3, 2016) reported values of what it calls the glass-ceiling index, which is designed to rate countries based on women’s chances of equal treatment at work. The index weights factors that include participation of women in higher education, participation in the workforce by women, pay, childcare cost, and maternity benefits. The best possible value for this index is 100. Data for 29 countries are shown in the accompanying table.

Chapter 4.3, Problem 41E, The article The Bestand WorstPlaces to be a Working Woman (The Economist, Graphic Detail for March

a. Are there outliers in this data set? If so, which observations are outliers?
b. Draw a modified boxplot for this data set.
c. The article points out that Nordic countries (Iceland, Sweden, Norway, and Finland) come out on top on this index. Where are the values for the Nordic countries located in terms of the boxplot?

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Chapter 4 Solutions

Introduction To Statistics And Data Analysis

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Solution Summary: The author analyzes the data set for the glass-ceiling index for women's chances to get equal treatment at work station.

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