You are working with the text-only light edition of "H.Lohninger: Teach/Me Data Analysis, Springer-Verlag, Berlin-New York-Tokyo, 1999. ISBN 3-540-14743-8". Click here for further information.

Exercise
Estimating the bicarbonate concentration in mineral waters

The amount of solid residues and the concentration of bicarbonate in mineral water are highly correlated. Use the data set WATERRESID to set up a straight line regression model for the estimation of the bicarbonate content from the amount of solid residues in the water. Try to answer the following questions:
 


Here are the measurements of the two "unknown" brands of mineral water ("Fonte Guizza", and "Radkersburger"):

                  HCO3      Solid
                  conc.     Residues
                  [mg/l]    [mg]
  ----------------------------------
  Fonte Guizza    256.2     230
  Radkersburger   2111      2850
  ----------------------------------

You may go now directly to the in order to experiment with the data.
 

Last Update: 2006-Jšn-18