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# Solutions for Chapter 8-4: Residual Plots and Mathematical Models

## Full solutions for Precalculus with Trigonometry: Concepts and Applications | 1st Edition

ISBN: 9781559533911

Solutions for Chapter 8-4: Residual Plots and Mathematical Models

Solutions for Chapter 8-4
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##### ISBN: 9781559533911

Since 11 problems in chapter 8-4: Residual Plots and Mathematical Models have been answered, more than 19785 students have viewed full step-by-step solutions from this chapter. Chapter 8-4: Residual Plots and Mathematical Models includes 11 full step-by-step solutions. This textbook survival guide was created for the textbook: Precalculus with Trigonometry: Concepts and Applications, edition: 1. This expansive textbook survival guide covers the following chapters and their solutions. Precalculus with Trigonometry: Concepts and Applications was written by and is associated to the ISBN: 9781559533911.

Key Calculus Terms and definitions covered in this textbook
• Coefficient of determination

The number r2 or R2 that measures how well a regression curve fits the data

• Confounding variable

A third variable that affects either of two variables being studied, making inferences about causation unreliable

• Direct variation

See Power function.

• Exponential function

A function of the form ƒ(x) = a ? bx,where ?0, b > 0 b ?1

• Finite series

Sum of a finite number of terms.

• Initial point

See Arrow.

• Initial value of a function

ƒ 0.

• Invertible linear system

A system of n linear equations in n variables whose coefficient matrix has a nonzero determinant.

• Modified boxplot

A boxplot with the outliers removed.

• Modulus

See Absolute value of a complex number.

• Normal distribution

A distribution of data shaped like the normal curve.

• Polar axis

See Polar coordinate system.

• Rational expression

An expression that can be written as a ratio of two polynomials.

• Scalar

A real number.

• Second

Angle measure equal to 1/60 of a minute.

• Solve an equation or inequality

To find all solutions of the equation or inequality

• Sum identity

An identity involving a trigonometric function of u + v

• System

A set of equations or inequalities.

• Time plot

A line graph in which time is measured on the horizontal axis.

• Tree diagram

A visualization of the Multiplication Principle of Probability.

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