0. Important annoucement :
     a.  pdf file for Lecture Notes is available on web.
     b. some changes are made in sir-program.lsp  file . Reload that file in the program folder (will show you again today later).

1. We are behind the schedule. Go back to  last Friday's lecture
      Discuss ANOVA and illustrate how to use it creatively for large data

2. Use ribosomal data as another example  of how to use two-way anova and pca model creatively.
     Give a brief introduction of gene expression micro array and Affymetrics gene-chips.

3. Organize the data project groups; program writing is another option ( e.g. polish the twoway-model.lsp;
   use protocol )