Regression Analyzer 3.2 Tutorial
Graphs and Lines of Best Fit
Page Contents
1. Creating graphs
This is a dedicated program that will plot points and draw a line of best fit. It is very easy to use and takes about 15 minutes to try out everything that is available. Set up the ranges for the axes, type in the data and click "Find" to generate the best fitting line.
The equation for this line is:
y = 0.357 x 0.498
This can be simplified to:
y = 0.4 x 0.5 or y = 0.4 √x
i.e. y is proportional to the square root of x
2. Options
Several types of regression may be tried out individually including; linear, reciprocal, power and polynomial. The equation for each line is automatically generated.
3. Printing
There are few options regarding the presentation of the graphs so you have to accept the format how it is. This isn't much of a problem as you only need a simple straightforward graph. The graph can be printed without a line so that it is possible to hand draw a line of best fit. Simple bar charts can also be produced.