5th Edition

ISBN: 9780321924599

Author: Mario F. Triola

Publisher: PEARSON

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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 11, Problem 5CRE

Boats and Manatees The table below lists the numbers of registered pleasure boats (thousands) in Florida and the numbers of watercraft-related manatee deaths for each year of the past decade.

Boats	90	92	94	95	97	99	99	97	95	90
Manatee Deaths	81	96	73	69	79	92	73	90	97	83

a. Test for a linear correlation between the numbers of boats and the numbers of manatee deaths.
b. Find the equation of the regression line. Use the numbers of boats for the independent x variable.
c. What is the best predicted number of manatee deaths for the year preceding those included in the table? For that year, there were 84 (thousand) registered pleasure boats in Florida. How accurate is that predicted value, given that there were actually 78 manatee deaths in that year?

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Chapter 11, Problem 4CRE

Chapter 11, Problem 6CRE

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Chapter 11 Solutions

Essentials of Statistics (5th Edition)

Ch. 11.2 - Prob. 1BSC Ch. 11.2 - Prob. 2BSC Ch. 11.2 - Prob. 3BSC Ch. 11.2 - Prob. 4BSC Ch. 11.2 - Prob. 5BSC Ch. 11.2 - Prob. 6BSC Ch. 11.2 - In Exercises 5-20, conduct the hypothesis test and...Ch. 11.2 - In Exercises 5-20, conduct the hypothesis test and...Ch. 11.2 - Prob. 9BSC Ch. 11.2 - In Exercises 5-20, conduct the hypothesis test and...

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Solution Summary: The author analyzes the linear correlation coefficient r for the variables boats and manatee deaths using the MINITAB software.

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