Example
Construct the regression line of the following data,
calculate r, a and b. Then find the unknown conc. (in
ppm) of a sample giving response 15.2 (using equation
and by interpolation)
Riboflavin (ppm) Response
0.05 2.2
0.100 5.80
0.200
0.400 12.20
0.800 22.30
43.30