Fitting Lines to Data
Key Questions

Answer:
I think what you are looking for is Linear Regression calculation, such as provided by the good old Commodore SR4190R. Does your calculator support it?
Explanation:

Preferably, all of them.
If you have fantastic data, you should be able to draw a straight line through all of the points.
However, this is not true in most cases.
When you have a scatterplot where not all of the points line up, you have to try your best to draw a line that goes through the middle of the group of points, like this:
You can find the exact line that "best fits" your points by using a graphing calculator (it should be called "linear fit").

Answer:
See below.
Explanation:
A outlier in the data is when it is not near or close to a set of points.
As shown above, the dot that isn't near or close to the other data point is an outlier.

A scatter plot is simply a graph which shows the locations of all the data points in a set.
So if I have the set
my scatter plot would be

A rough guide is to have approx half the points above and half of them below the line. You can find the mean of the
#x# values and the mean of the#y# values and ensure the line passes through this point but it does not have to for most questions.
Questions
Forms of Linear Equations

Write an Equation Given the Slope and a Point

Write an Equation Given Two Points

Write a Function in SlopeIntercept Form

Linear Equations in PointSlope Form

Forms of Linear Equations

Applications Using Linear Models

Equations of Parallel Lines

Equations of Perpendicular Lines

Families of Lines

Fitting Lines to Data

Linear Interpolation and Extrapolation

Problem Solving with Linear Models

Dimensional Analysis