BIG IDEAS MATH Integrated Math 1: Student Edition 2016

16th Edition

ISBN: 9781680331127

Author: HOUGHTON MIFFLIN HARCOURT

Publisher: Houghton Mifflin Harcourt

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Concept explainers

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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Question

Chapter 3.1, Problem 21E

To determine

To calculate: To identify independent and dependent variables

Expert Solution & Answer

Answer to Problem 21E

Independent variable is number of quarters

Dependent variable is amount of time on the meter

Explanation of Solution

Given: Number of quarters you put into a parking meter affects the amount of time you have on the meter.

Formula Used:

A variable is an one that we are trying to measure and are of two types:

Independent Variable: That stands alone and isn’t changed by the other variables
Dependent Variable: That depends on the other variables

Calculation:

Given that number of quarters you put into a parking meter affects the amount of time you have on the meter.

Variables are “number of quarters” and “amount of time on the meter”

Here, value of variable “number of quarters” is not affected by any values, so it is an independent variable

Whilevalue of variable “amount of time on the meter” will change as the value of variable ““number of quarters” changes, so it is a dependent variable

Conclusion:

Hence, Independent variable is number of quarters and Dependent variable is amount of time on the meter

Chapter 3.1, Problem 20E

Chapter 3.1, Problem 22E

Chapter 3 Solutions

BIG IDEAS MATH Integrated Math 1: Student Edition 2016

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