# Using Core Math Tools to Determine the Line of Best Fit - PowerPoint PPT Presentation

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Using Core Math Tools to Determine the Line of Best Fit. Karla Goldhahn. Where can you download Core Math Tools?. Download the free software here: http://www.wmich.edu/cpmp/CPMP-Tools/. Demonstration:. Step 1: Open Spreadsheet. Step 2: Enter the data.

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Using Core Math Tools to Determine the Line of Best Fit

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## Using Core Math Tools to Determine the Line of Best Fit

Karla Goldhahn

http://www.wmich.edu/cpmp/CPMP-Tools/

### Step 2: Enter the data

Column A: input valuesColumn B: output values

For this example, I used the data from the Building and Combining functions task. Column A represents number of years since 2000; column B represents the crime rate for City A.

### Step 3: Graph the Data

1. Go to:

Tools,

Graph,

Scatterplot

2. Designate the input values (horizontal) and output values (vertical)

For this example, Column A, number of years since 2000, is my input/horizontal and Column B, crime rate for City A, is my output/vertical

### Step 4: Draw Regression Models

1. Go to:

Options,

Draw Regression Model

2. There you

have it, the

equation for the

line of best fit!

For questions or to provide feedback, please email me at Karla.Goldhahn@henry.k12.ga.us