To determine the linear relationship between two variables: y and
x there may be up to 2 parameters: slope, m and intercept, c.
We show two examples:
The value of chisquared:
is calculated in each case with y(x_{i}) = mx_{i}
[+c].
Vary
m (and c), by dragging the straight line on the graph, to find the
lowest value of C^{2}
How well did you do? 
Hit the lower bar to change the type of line being
fitted.
