(a) Find an equation of the least-squares line y for these data. (Round numerical values to three decimal places.) y = (b) Use the result of part (a) to estimate the rate of change in the projected global defense spending from 2008 through 2015. (Round your answer to three decimal places.) $ trillion/yr (c) Assuming that the trend continues, what will the global spending on defense be in 2016? (Round your answer to two

(a) Find an equation of the least-squares line y for these data. (Round numerical values to three decimal places.) y = (b) Use the result of part (a) to estimate the rate of change in the projected global defense spending from 2008 through 2015. (Round your answer to three decimal places.) $ trillion/yr (c) Assuming that the trend continues, what will the global spending on defense be in 2016? (Round your answer to two

Calculus: Early Transcendentals

8th Edition

ISBN:9781285741550

Author:James Stewart

Publisher:James Stewart

Chapter1: Functions And Models

Section: Chapter Questions

Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...

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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 predictors. Regression analysis is one of the methods to find the trends in data. The independent variable used in Regression analysis is named Predictor variable. It offers data of an associated dependent variable regarding a particular outcome.

Question

Global Defense Spending Suppose the following table gives the projected global defense spending (in trillions of dollars)
from the beginning of 2008 (t = 0) through 2015 (t = 7).
Year, x
1
3
4
7
Sales, y
1.21
1.31
1.38
1.4
1.67
1.88
1.96
1.97
(a) Find an equation of the least-squares line y for these data. (Round numerical values to three decimal places.)
y =
(b) Use the result of part (a) to estimate the rate of change in the projected global defense spending from 2008 through
2015. (Round your answer to three decimal places.)
$
trillion/yr
(c) Assuming that the trend continues, what will the global spending on defense be in 2016? (Round your answer to two
decimal places.)
$
trillion

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