## Tutoring on Regression on the Graphing Calculator

Learning Objectives:

#### Understand Regression on the Graphing Calculator.

Regression on the Graphing Calculator

A graphing calculator is a handheld device that is capable of plotting graphs, solving simultaneous equations, and performing other tasks with variables. Graphing calculators are generally programmable. So the user can create customized programs for science, engineering and education applications. Because they have large displays, it can display several lines of text and calculations at the same time. Often we have a set of points that is approximately linear, and we would like to describe the relationship between the two variables using a line. Linear regression, or least squares fit, is the most common way to find this line. This line is often called the line of best fit. Fortunately, this is built into the graphing calculators. On using the graphing calculator the goal is to be able to turn the graphing calculator on and off and also to cover how to enter various expressions on the graphing calculator including fractions, exponents, radicals, scientific notation, evaluating expressions, matrices, logarithms and regression.

Hook Questions

1.    How do you do linear regression on a TI 83?

2.    How do you graph a linear regression?

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